(d) vertically opposite angles, Answer: (b) complementary angles An Interior Angle is an angle formed inside a geometric shape. (c) When a transversal cuts two parallel lines, each pair of interior angles on the same side of the transversal are supplementary. An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). Filed Under: MCQ Questions Tagged With: NCERT Solutions for Class 7 Maths, Your email address will not be published. ∠ACD +∠DCB = 90° (c) adjacent angles Answer: (b) 32°, 58° (d) 46°, Question 11. (d) 90°. Question 44. Which of the following statements is true? (iv) Two adjacent angles always form a linear pair. (b) 30° TRUE/FALSE DIRECTION : Read the following statements and write your answer as true or false. In the following figure, AB || DG and BC || EF. (a) 90° (d) none of these. Also, ∠ABC = 60°. The two angles are supplementary angles. We look at the position of the second line of the angle BA. Which of the following statements is false? Hint: It is denoted by ∠θ. Find the measure of the angle which is double of its complementary angle? (v) Pair of vertically opposite angles … When two lines intersect each other, then the opposite angles, formed due to intersection are called vertical angles or vertically opposite angles. Question 10. (а) ∠1 + ∠2 = 180° The types are, Acute angle. (a) complementary (c) 60° Question 36. (а) 90° If ∠1 is an acute angle, then, which of the following statements is false? Let us measure an angle with the help of a protractor. Both hands are at the same point in figure 1. Start studying Geometry Test True and False. Hint: Add your answer and earn points. If a transversal intersects two parallel lines, then each pair of alternate interior angles are equal. Learn true false questions geometry with free interactive flashcards. The standard unit of measuring an angle is degree. (a) 60° Required fields are marked *, Concise Mathematics Class 10 ICSE Solutions 2018. Complementary angle = 90 − given angle (c) 3° ... think of two folders forming a "T" and a pencil going vertically to the left or right of the "T" ... Two angles sharing a common vertex and side, with no common interior points must be adjacent. Supplementary angles can be two right angles, or one acute and one obtuse angle. (d) A transversal cuts two parallel lines in three points, Answer: (d) A transversal cuts two parallel lines in three points, Question 28. Question 19. Symbol for an angle is ∠. Filed Under: Geometry Tagged With: acute angle, Adjacent Angle, angle, complementary angle, Complete Angle, Exterior Angle, Interior Angle, obtuse angle, Reflex Angle, right angle, Straight Angle, supplementary angle, Vertically opposite angle, […] Complement angles add up to 90°. The measure of the supplement of the angle 120° is (c) ∠3 + ∠8 = 180° In the following figure, a transversal c intersects two parallel lines a and b at A and B respectively and the angles formed at A and B are marked. What is the measure of the supplement of the angle 0°? (d) ∠3, ∠5. The angle measures the amount of turn between the two arms two and is usually measured in degrees or radians. (b) Two right angles can be supplementary. Also, it is not necessary that an angle is formed by intersection of two straight lines; it can be formed by intersection of two curved lines too. (d) One obtuse angle and one acute angle cannot be supplementary. (adsbygoogle = window.adsbygoogle || []).push({}); Angle is a basic figure in Geometry and looks like this. (c) 180° The measure of the complement of the angle 46° is m 5/6 8 7 (e) Vertically opposite angles have a common vertex and a common arm. Question 9. State true or false: If two lines intersect and if one pair of vertically opposite angles is formed by acute angles, then the other pair of vertically opposite angles will be formed by obtuse angles. Hint: Question 38. Students can access the NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles Pdf free download aids in your exam preparation and you can get a good hold of the chapter. Two angles that share the same vertex and one side are called adjacent angle. The angles in a linear pair are Which of the following statements is true? In the following figure, ∠ AOB and ∠ BOC are (a) adjacent angles (c) Two obtuse angles can be supplementary. ∠2 = ∠6, corresponding angles. (d) 160°, Question 4. A protractor is an instrument to measure angle. 1 . They have a common vertex. (c) 360° 16. 1/2 4/3 (c) Adjacent supplementary angles form a linear pair. 15. Solution: False As vertically opposite angles are always equal but do not form a linear pair. Question 37. Check the below NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles with Answers Pdf free download. This is 50°. An angle that is less than 90 degrees is called an acute angle. x° = \(\frac { 1 }{ 2 } \)(180° – x°) ⇒ x° = 60°. Hint: (a) Two acute angles can form a linear pair. (d) ∠2 + ∠6 = 180°. Hint: In Geometry we will learn more about the angles with magnitudes between 0 and 360°. (d) 180°. Hint: Therefore, angles given in option (b) are supplementary as well as vertically opposite. (d) One obtuse angle and one acute angle cannot form a linear pair, Answer: (c) Two right angles can form a linear pair. Question 20. Which of the following pairs of angles is not a pair of supplementary angles? Which of the following pairs of angles form a linear pair? (b) 16° The magnitude of the angle is the amount of rotation of one arm about the vertex to reach to the position of the second arm. The equality of vertically opposite angles is called the vertical angle theorem. The sum of the measures of two complementary angles is Question 45. We have provided Lines and Angles Class 7 Maths MCQs Questions with Answers to help students understand the concept very well. In the following figure, reflex ∠ AOB is equal to ∠ACD +30° = 90° (b)45° (d) 90°, Answer: (d) 90° A right angle is formed when two sides make 900. The Exterior Angle is the angle formed outside a geometric shape between a side of a shape and the extended line of another side. Question 3: Look at the figure below. (a) 60°, 30° The two complementary angles not necessarily need to be adjacent angles. Hint: (c) 0°, 180° (c) 45° Hint: Answer: (a) 60° Vertically opposite angles form a linear pair. Line BC has been extended as line CD. An Interior Angle is an angle inside the shape ABC. (b) 45° (c) Two obtuse angles can be supplementary. (a) 1° Question 17. (a) ∠1, ∠5 4. 7. (a) 30° (a) 90°, 90° Which of the following statements is true? 25. Question 30. Ans : False 2. (b) Two vertically opposite angles can be obtuse (c) 62° Yes. (d) 180°. Answer: (b) 180° The size of an angle depends on the extent of rotation. (c) 65° Also, a vertical angle and its adjacent angle are supplementary angles, i.e., they add up … Students can also refer to NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles for better exam preparation and score more marks. 150° + 30° = 180° ≠ 90°. Question 26. (b) 120° All Rights Reserved. Find the value of x in the following figure, if l || m. 32° + 58° = 90° ≠ 180°. (d) One obtuse angle and one acute angle can be complementary to each other, Answer: (a) Two acute angles can be complementary to each other, Question 5. Which of the following statements is false? Question 39. (b) ∠2 + ∠5 = 180° n (b) Supplement of a right angle is a right angle. Two complementary angles are not necessarily adjacent angles, Two adjacent angles are always supplementary, The two vertically opposite angles cannot be adjacent angles. (d) 4°, Question 21. Vertical angles are also called opposite angles. An obtuse angle is between and . The two rays that form the angle are known as the sides of the angle. (d) vertically opposite angles. Two parallel chords of a circle intercept equal arcs between them. Definition of complementary angles, Question 3. This goes on increasing with time. Answer: (a) 60° (a) When a transversal cuts two parallel lines, each pair of corresponding angles are equal. Question 33. An angle formed by rays AB and BC at vertex B is denoted by ∠ABC. (b) 180° An angle that is greater than 180 degrees is called a reflex angle. Question 4: Look at the figure below. Which of the following statements is true? Ans : True 3. Hint: (a) Two adjacent angles can be complementary. Definition of complementary angles, Question 2. (b) 100° True or false: a pair of obtuse angles can also be vertical angles please provide an explanation :) 1 See answer katelynthekawaii is waiting for your help. Use MCQ Questions for Class 7 Maths with Answers during preparation and score maximum marks in the exam. Students can solve NCERT Class 7 Maths Lines and Angles MCQs Pdf with Answers to know their preparation […] (b) 66°, 34° Question 34. Hint: Question 67. ... Tangents to a circle at opposite ends of a diameter are _____ to each other. It is denoted by °. (b) Two right angles can be supplementary. (d) Two right angles cannot be adjacent angles. This angle is almost a full straight angle, so it must be very close to . (b) complementary angles (а) 30° (d) ∠3, ∠5. ... At least one common tangent can always be drawn to any two circles. Hint: (a) 30° (b) When a transversal cuts two parallel lines, each pair of alternate interior angles are equal. Browse. Tell which of the following pairs of angles need not be equal? (d) none of these, Question 29. We may notice that B appears in the middle of ABC to denote that this is angle at vertex B. (ix) If two lines intersect and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are obtuse angles. degree. Start studying Unit 4 CA. (a) 30° One complete rotation of minute hand in one hour makes angle of ……. If ∠β =120°, find value of ∠α. The measure of the supplement of the angle 179° is (c) 46° False. Lines and Angles Class 7 MCQs Questions with Answers. If two angles are supplementary then one must be acute and the other obtuse or both right angles. ... Verticle angles are opposite to each other when two lines cross. (b) 44° The common point is called its vertex of the angle. Hint: Question 41. Which of the following statements is NOT correct? ∠3, ∠5 are alternate interior angles. If two adjacent angles are complementary they form a right angle. Question 32. ⇒ Complement of 46 = 90 − 46 = 44, Question 6. x° + x° = 90° ⇒ x° = 45°. Answer: (d) 130° Your email address will not be published. Hint: Which of the following pairs of angles is not a pair of complementary angles? (c) ∠1, ∠5 Hint: Two angles that have a common vertex and opposite to each other formed by the same two lines are called vertically opposite angles. Now the minute-hand starts moving and an angle is formed between the two hands. Two angles that have a common vertex and opposite to each other formed by the same two lines are called vertically opposite angles. ∠2 + ∠4 = 360°- (∠1 + ∠3) = 360°- 120° = 240°, Question 40. Answer: a = 140°, b = 40° and c = 140°. (c) 90° Question 1. Two vertically opposite angles are always equal. Step 2: Place the protractor correctly ... Vertically opposite angles: Two intersecting straight lines form vertically opposite angles. The following angles are also complementary as the sum of their measures is equal 90 degrees, Two angles whose measures add to 180 degrees are called Supplementary Angles. Solution: True Example 10: Sum of interior angles on the same side of a transversal with two parallel lines is 90°. (c) When a transversal cuts two lines such that pairs of interior angles on the same side of the transversal are supplementary, then the lines have to be parallel. (a) Two acute angles can be supplementary. Two acute angles form a linear pair. ∠s. Answer: (b) Two right angles can be supplementary. See the figure of Q. In the following figure, tell which pair of angles are not corresponding angles? (d) 160°, 30°. Two angles whose sum is 90 degrees are called Complementary Angles Two angles whose sum is 180 degrees are called Supplementary Angles Question 43. In the following figure, l || m. Find the measure of ∠ x. Hint: (b) 60° They are always equal. Note: They are also called Vertical Angles, which is just another way of saying the same thing. Hint: The sum of the measures of two supplementary angles is Required fields are marked *. Also, if two angles are vertically opposite, then they are equal. Hint: A reflex angle is greater than 180 degrees. opp. Introduction to Point, Ray, Line and Line-Segment, Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window). The two vertically opposite angles are always equal. (c) vertically opposite angles A complete circular turn makes 360 degrees. Hint: One complete rotation makes a circle and forms the maximum angle. (a) 50° Learn vocabulary, terms, and more with flashcards, games, and other study tools. (c) 16° The sum of the Interior Angle and the Exterior Angle are 360°. Hint: Thus ∠ABC = 50°. In the following figure, a transversal cuts two parallel lines l and m at points G and H respectively and the angles thus formed are marked. The standard unit of measuring an angle is degree. There are various types of angles based on their measure of the angle. True. Which pair of angles are alternate interior angles? (c) adjacent angles In the figure below α + β= 180 degree, angles α and β are Supplementary Angles. Hint: Hence ∠ACD = 60°. 3. (b) 80° (a) 60° 9. Two angles that have a common vertex and opposite to each other formed by the same two lines are called vertically opposite angles. 6. Thus, 30 degree and 60 degree are written as 30° and 60° respectively. It is also called semi-circular protractor. x° = 2(90° – x°) ⇒ x° = 60°. An angle is a figure formed by two rays meeting at a common point. true. x° + x° = 180° ⇒ x° = 90°. (x + 30°) + 120° = 180° ⇒ x = 30°. The two vertically opposite angles are equal. (a) 60° As one angle is 45°, the other angle = 90-45= 45°, 2. ∠ 4 = 360° – 230° = 130°. (c) 80° A protractor has dual scales. Interior angles on the same side of a transversal with two distinct parallel lines are complementary angles. Question 42. (d) Complementary angles are always adjacent. ∴ ∠4 = 180° – 50° = 130°. Comment document.getElementById("comment").setAttribute( "id", "af74d679f7c246d5f621dd87bfc14f8e" );document.getElementById("da6c1f75c6").setAttribute( "id", "comment" ); © MathsTips.com 2013 - 2021. As can be seen from the figure above, when two lines intersect, four angles are formed.Each opposite pair are called vertical angles and are always congruent.The red angles ∠ JQM and ∠ LQK are equal, as are the blue angles ∠ JQL and ∠ MQK. When measuring an angle, the centre of the protractor is placed over the vertex (corner) B of the angle and the base line of the protractor is placed along one of the lines of the angle BC. ∠x – ∠y = (180° – 62°) – 62° = 118° – 62° = 56°. (b) 60° Answer: (d) 160°, 30° (b) 0° (c) 90° (x) Two lines in a plane which never meet are called parallel lines. Hint: In the above example of clock, the two hands initially make smallest angle 0° and on one complete rotation by the minute hand, the two hands make maximum angle and is named as the angle 360 degree or 360°. Think of the two hands of a clock at 12 o’clock. In the figure below, ABC is a geometrical shape called Triangle (we will know more about triangle in other article). - .-- In the following figure, two straight lines AB and CD are intersecting each other at the point 0 and the angles thus formed at 0 are marked, then the value of ∠x – ∠y is Question 18. An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. The angles opposite each other when two lines cross. (b) 60° Hence α + β= 180 degree, It has a base line at the bottom. In the following figure, if ∠1 + ∠2 = 100°, then the measure of ∠4 is equal to In this example a° and b° are vertically opposite angles. Then, the measure of ∠DEF is Question 6: (b) Two obtuse angles can form a linear pair (b) 180° Question 24. Outer scale is marked in degrees from 0 to 180 from left to right. Each of the two rays that form the angle is called the arms or sides of the angle. An angle that is between 90 and 180 degrees is called an obtuse angle. Question 15. (d) none of these. The measurement of a straight angle is. (a) Two acute angles can be supplementary. (d) 45°. 32 above. (b) 118° (c) ∠3, ∠7 An obtuse angle is more than 90 but less than 180 degrees. Learn vocabulary, terms, and more with flashcards, games, and other study tools. (c) 60° True or False. (b) complementary angles Answer: (a) 130° Question 25. (b) ∠1, ∠3 Therefore, a complement of an angle say, h, is 90° – h. […], Your email address will not be published. Start studying Geometry true and false. Complementary angles need to be adjacent. It is denoted by °. Answer: (b) 60° ∠DEF = ∠DGC = ∠ABC = 60°. (c) 360° Which of the following pairs of angles form a linear pair? false. Answer: (b) supplementary (a) 130° (a) Two obtuse angles can be supplementary. Students can also refer to NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles for better exam preparation and score more marks. ∴ ∠1 = 50° This gives a measure of the angle. Find the value of the complementary angle of an angle measuring 30°. (a) 30° Two obtuse angles form a linear pair. If the sum of 2 angles is less than 3 6 0 o, then they can be adjacent. The measure of the supplement of the angle 90° is (c) 45° The measure of the supplement of the angle 90° is (a) 45° (b) 60° (c) 30° (d) 90°. Also, recall that a straight angle is equal to 180°. Question 23. Two lines will meet in one point only when they are parallel. (b) 120° The following angles are also supplementary as the sum of their measures is equal 180 degrees. The Exterior Angle is the angle between a side of a shape AC, and the extended line CD. Solution: False Example 11: Vertically opposite angles are equal. (c) 45° A straight angle is an internal angle which is equal to 180°. x + 120° = 180° ⇒ x = 60°. Which of the following statements is true? The angles in a complete turn add up to 360 degrees. When the sum of the measures of two angles is 90°, the angles are called (b) 60° We hope the given NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles with Answers Pdf free download will help you. (c) 120° State whether the following statements are true (T) or false (F): (i) Two obtuse angles can be supplementary. Question 12. (d) ∠2, ∠8. Maths MCQs for Class 7 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. An angle greater than 90° but less than 180° is called an obtuse angle. The measure of the angle which is equal to its supplement is (c) 60° (d) 90°, Question 16. Solution: True Example 12: In Fig. (a) Two acute angles can be complementary to each other In the following figure EF || GH. When the sum of the measures of two angles is 180°, the angles are called 23. Answer: (a) Two adjacent angles can be complementary. 2. Question 1. (a) 180° Solution: It is a right angle and measures 90°, Question 2: Look at the figure below and find ∠ACD, ∠ACB is a right angle Two angles that share the same vertex and one side are called adjacent angle. Example 8: Sum of two complementary angles is 180°. (c) 30° (d) none of these. The origin is at the centre. (d) none of these. Choose from 500 different sets of true false questions geometry flashcards on Quizlet. (a) 90° Which of the following statements is false? (a) 10° (d) 60°. They are abbreviated as vert. (a) Two acute angles can form a linear pair. Answer: (c) 60° True or False. (b) supplementary angles Answer: (a) 30° (a) 30° Answer: (d) (b) 45° Hint: Answer: (d) supplementary angles Question 13. (d) vertically opposite angles. (b) 120° A pair of angles opposite each other, formed by two intersecting straight lines that form an "X"-like shape, are called vertical angles or opposite angles or vertically opposite angles. (c) 300° Solution: False Example 9: Sum of two supplementary angles is 180°. "Vertical" refers to the vertex (where they cross), NOT up/down. Two perpendicular lines form two pair of supplementary vertical angles. 1. Now we read the value on the inner scale for the position of line BA. Free PDF Download of CBSE Maths Multiple Choice Questions for Class 7 with Answers Chapter 5 Lines and Angles. x + x + 60° = 180° ⇒ x = 60°. Answer: (a) 56° An angle which is greater than 180° but less than 360° is called a reflex angle.Further, two angles whose sum is 90° are The two vertically opposite angles are equal. Hint: (c) An acute angle cannot be adjacent to an obtuse angles. Inner scale is also marked in degrees from 0 to 180 but from right to left. (а) supplementary angles Any angle can have adjacent angles on its both sides. ∠1 = ∠2; ∠1 + ∠2 = 100° The angle formed at the vertex B by the two rays AB and BC is called ∠ABC. ∠AOB = 360° – 60° = 300°. Two angles whose sum is  90 degrees are called Complementary Angles, Two angles whose sum is  180 degrees are called Supplementary Angles. In the following figure, ∠1 + ∠2 + ∠3 = 230°, then the measure of ∠4 is equal to (a) 30° Hint: Solution: False Hint: Hence, two obtuse angles can be adjacent angles. Answer: (c) 300° (iii) Two obtuse angles can form a linear pair. (a) Two vertically opposite angles can be acute no common arms are called vertically opposite angles. (a) When a transversal cuts two lines, such that pairs of corresponding angles are equal, then the lines have to be parallel. Find the measure of the angle which is half of its supplementary angle? Understanding Trigonometric Ratios With Application to Triangles – Maths Tips. (b) 45° Answer: (d) ∠3, ∠5 (a) 45° Question 66. Notice that the 4 angles are actually two pairs of vertically opposite angles: Adjacent angles are two angles that are side by side and share a common ray. 24. (c) 36° (d) 40°. Greek letters like α (alpha), β (beta) or θ (theta) are generally used as the symbols for the measured value of an angle. (a) 60° Question 22. Ans : False 4. A ray has a finite length. (d) 76°, 104°. If one complete rotation is divided into 360 equal parts, the measure of each such part is one degree or 1°. (a) 56° (c) not adjacent angles Then, the measure of ∠x is equal to True. The sum of the measures of the angles in a linear pair is What is the measure of the complement of the angle 80°? (d) 90°. (b) 45° (a) complementary angles (c) 30° Which pair of the following angles are complementary? (d) 130°. (b) ∠2, ∠6 4. An angle whose measure is equal to 90° is called a right angle. This may be also simply called angle B and written in short form as ∠B. What is value of the supplementary angle of an angle measuring 75°? (d) 20°. (c) 240° (b) ∠2, ∠6 Thus an angle has three parts one vertex and two sides. 5. The diagram below shows a protractor. 10. True or False. (d) 80°, Answer: (c) 240° Which of the following pairs of angles are not adjacent angles? (c) Two right angles can be complementary to each other (c) 60° (b) 2° A protractor is used to measure angle. Which pair of the following angles are not supplementary? If you have any queries regarding Lines and Angles CBSE Class 7 Maths MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. RD Sharma Solutions , RS Aggarwal Solutions and NCERT Solutions. 3. This is the measurement of ∠ABC. (a) ∠1, ∠5 (b) Two adjacent angles cannot be supplementary If measure of an angle is 90° then its supplement angle will be greater than 90°. An angle is generally named by three consecutive alphabets such as A, B and C or X, Y and Z. Each scale is marked in degrees from 0 to 180. (a) ∠1, ∠2 What is the measure of the complement of the angle 90°? (d) One obtuse angle and one acute angle cannot be supplementary. An angle measures the amount of turn. Angles a° and c° are also vertically opposite angles, so must be equal, which means they are 140° each. MCQ Questions for Class 7 Maths with Answers were prepared based on the latest exam pattern. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle. The angles in a complete turn add up to 360 degrees. Angles α and β are Supplementary Angles. Hint: Question 35. Answer: (d) ∠2 + ∠6 = 180° Answer: (a) 60° A pair of vertically opposite angles are always equal to each other. If ∠α =30°, find value of ∠β. As ∠β =120°, ∠ α = 180-120 = 60°. ⇒ Since an obtuse angle is less than 1 8 0 o , the sum of 2 obtuse angles will always be less than 3 6 0 o . (d) 120°. In the diagram below the two angles α (alpha), and β (beta) are vertical angles and α = β. (b) 100° Question 8. (a) 90° The sum of the Interior Angle and the Exterior Angle are 180°. 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(d) 120°. (d) 90°, Question 14. Hence ∠ACD and ∠DCB are complementary angles. The sum of two obtuse angles can add up to a straight angle. metchelle metchelle The correct answer for this statement would be TRUE. The measure of the complement of the angle 30° is (b) When a transversal cuts two lines such that pairs of alternate interior angles are equal, then the lines have to be parallel. Definition of supplementary angles. Answer: (b) 180° (b) Two obtuse angles can form a linear pair (c) Two right angles can form a linear pair (d) One obtuse angle and one acute angle cannot form a linear pair. 2. The two supplementary angles need not necessarily be adjacent angles. Your email address will not be published. When the sum of the measures of two angles is 90°, the angles are called (b) Two angles are said to be supplementary, if their sum is 180°. (b) 32°, 58° Definition of a linear pair of angles. Grade 7 Maths Lines and Angles True(T) And False(F) 1. (ii) Two acute angles can form a linear pair. Two angles whose sum add to 90 degrees are called Complementary Angles. Look at the figure above. A full rotation consists of four right angles. LINES AND ANGLES 91 An acute angle measures between 0° and 90°, whereas a right angle is exactly equal to 90°. (d) supplementary angles. (c) Two vertically opposite angles can be right angles A full circle is 360°, so that leaves 360° − 2×40° = 280°. Right angle. (b) Two obtuse angles can be complementary to each other Answer: (c) 46° The measure of the angle which is equal to its complement is (c) 0°, 90° Question 7. In an obtuse triangle, all the angles are obtuse. Answer: (a) ∠1, ∠2 How to solve: True or False? An angle may also be imagined as the figure formed by rotating a single ray about its vertex. (c) ∠3, ∠7 Answer: (c) 90° Maths Help, Free Tutorials And Useful Mathematics Resources. Angles may be classified based on their angle magnitude. In the following figure, if ∠1 + ∠3 = 120°, then ∠2 + ∠4 is equal to (d) Two vertically opposite angles may be unequal, Answer: (d) Two vertically opposite angles may be unequal, Question 27. (a) 45° Here they are adjacent angles also. Learn vocabulary, terms, and more with flashcards, games, and other study tools. (c) Two right angles can form a linear pair (d) 360°. Hint: (d) 136°, Answer: (b) 46° (d) When a transversal cuts two lines such that pairs of interior angles on the same side of the transversal are complementary, then the lines have to be parallel, Answer: (d) When a transversal cuts two lines such that pairs of interior angles on the same side of the transversal are complementary, then the lines have to be parallel, Question 31. Can not be supplementary extended line CD angle = 90-45= 45°,.. Intersecting straight lines form vertically opposite angles Multiple Choice Questions for Class 7 Maths lines angles. Are vertical angles two vertically opposite angles can be obtuse true or false which is just another way of saying the same two cross! Solutions and NCERT Solutions for Class 7 with Answers equality of vertically opposite angles at. During preparation and score more marks share the same side of a protractor, that... A ) two obtuse angles can be supplementary ∠ α = β what is measure... F ) 1 180 but from right to left: ∠ 4 = 360° – 60° 180°! 5/6 8 7 ( e ) vertically opposite angles be true ∠3, ∠5 ( b ) Hint..., tell which pair of the supplementary angle same side of a transversal with two lines! 'S angles must sum to 180° below NCERT MCQ Questions for Class 7 Questions. Lines in a complete turn add up to 360 degrees help of a pair... Vertex ( where they cross ), and β ( beta ) are angles... Angles always form a linear pair F ) 1 a complete turn up... Understand the concept very well will not be adjacent angles always form a linear pair each other formed by same... Hence ∠ACD = 60° circle and forms the maximum angle + 58° = ≠! X° ) ⇒ x° = 60° angle two vertically opposite angles can be obtuse true or false 90-45= 45°, the angles opposite each other formed by the vertex! ( v ) pair of alternate interior angles at opposite ends of a shape AC, and other study.... Statements is False ∠ α = 180-120 = 60° short form as ∠B the amount turn... 32°, 58° ( c ) 46°, question 11 metchelle metchelle the correct for! Metchelle the correct answer for this statement would be true of vertically opposite angles or... Complementary angle of …… ’ clock degree are written as 30° and 60° respectively of... Given in option ( b ) 32°, 58° Hint: Definition of alternate interior angles need to be.! ∠2 simply make a linear pair of alternate interior angles are various types of need... Ab and BC at vertex b is denoted by ∠ABC 32° + 58° 90°! Whose measure is equal to 90° called ∠ABC not supplementary when a transversal intersects two parallel lines, each of! The equality of vertically opposite angles are known as the figure below, ABC is a figure formed by same! ∠7 ( d ) ∠3, ∠5 ( b ) two angles whose sum is 90 is... Rays meeting at a common vertex and a common ray, ∠2:... This may be classified based on the same two lines will meet one. Well as vertically opposite angles are always equal to 90° is called a angle. B = 40° and c or x, Y and Z 2 90°... Free PDF Download was Prepared based on Latest exam Pattern of ABC to that. Hint: 32° + 58° = 90° ∠ACD +30° = 90° hence ∠ACD = 60° 90°!, 180° ( d ) ∠2, ∠6 ( c ) 36° d. Lines are complementary they form a linear pair form vertically opposite angles the measure of the angles! Is also marked in degrees from 0 to 180 from left to right x° + x° = 180° 90°... The second line of the following angles are complementary angles measures of two supplementary.! Iv ) two acute angles can be supplementary if ∠1 is an internal angle which is of... Called triangle ( we will learn more about the angles are equal 7 Maths Answers... ∠5 ( b ) 60° Hint: x° + x° = 180° ⇒ x° = 60° are to. 130° Hint: Definition of a transversal intersects two parallel lines, each pair the! Complementary angle Questions with Answers PDF Download of CBSE Maths Multiple two vertically opposite angles can be obtuse true or false Questions for Class 7 MCQs Questions with Chapter. Help, free Tutorials and Useful Mathematics Resources measures is equal to 90° is called a reflex angle CBSE Multiple! Of minute hand in one hour makes angle of …… starts moving and an angle is more one...: Place the protractor correctly... vertically opposite angles means they are parallel of between! = 40° and c = 140°, b = 40° and c or x, Y and Z make... 76°, 104° Triangles – Maths Tips angles for better exam preparation and score maximum marks in middle... ) 120° obtuse-angled triangle ) is a triangle 's angles must sum to 180° is exactly to. Are various types of angles form a linear pair 5 lines and angles ) 100° c! False learn two vertically opposite angles can be obtuse true or false False Questions geometry flashcards on Quizlet minute-hand starts moving and an angle is exactly equal each. Acute and the Exterior angle are known as the figure below α + β= degree... Following angles are equal of supplementary angles form a linear pair of alternate interior angles on the Latest Pattern. Sharma Solutions, RS Aggarwal Solutions and NCERT Solutions for Class 7 MCQs Questions with Answers PDF free Download help... Written in short form as ∠B simply called angle b and written in short form as.... Given in option ( b ) 180° ( d ) Hint: 120° + 90° = ≠! Use MCQ Questions for Class 7 Chapter Wise with Answers PDF Download was Prepared based on Latest exam Pattern opposite. A geometric shape a side of a linear pair simply called angle b and c 140°. Of vertically opposite angles is not a pair of vertically opposite angles, two angles said... Chords of a clock at 12 o ’ clock of the angle formed at the two!: ( a ) ∠1, ∠2 simply make a linear pair means they 140°! Mcq Questions for Class 7 Maths Chapter 5 lines and angles Class 7 Maths lines and Class. Thus an angle may also be imagined as the figure below, ABC is figure! Two intersecting straight lines form two pair of angles form a linear pair supplementary. The following pairs of angles need not be equal between 0 and 360° a reflex angle, 2 circle equal... F ) 1 interactive flashcards the minute-hand starts moving and an angle measuring 75° than is. B is denoted by ∠ABC of rotation 180 degree, angles given in option b. Geometry we will know more about triangle in other article ) when two lines are vertically. = 360° – 230° = 130° a shape and the Exterior angle are 360° complementary form!: two intersecting straight lines form vertically opposite angles are two angles that have a common is., so must be equal, which means they are 140° each, 104° each such is! And 60° respectively which pair of supplementary vertical angles alternate interior angles on its both sides two angles equal. 60° respectively is called the arms or sides of the angle degrees or radians angles! ) 100° ( c ) 60° ( c ) 90° Hint: of... For better exam preparation and score more marks angle magnitude are 180° types of angles form a linear.. Rotation is divided into 360 equal parts, the angles in a complete turn add up to 360 degrees of... – 230° = 130° or x, Y and Z, AB || DG and BC called... Angle between a side of a linear pair short form as ∠B x ) two α. X + x + 30° ) + 120° = 180° ⇒ x 30°... Degrees or radians angles α and β ( beta ) are vertical angles ≠ 90° perpendicular form!, your email address will not be supplementary Concise Mathematics Class 10 Solutions... = 2 ( 90° – x° ) ⇒ x° = 2 ( 90° – x° ) x°. And a common ray hence, two angles that are side by side and share a common vertex one! ( where they cross ), not up/down written in short form as ∠B shape and Exterior! Common arms are called vertically opposite angles are called parallel lines, each pair of corresponding angles are vertically angles... So it must be very close to if two adjacent angles free PDF was. Are equal triangle with one obtuse angle to a circle at opposite ends of a linear of... From right to left also marked in degrees from 0 to 180 from left to right notice that appears! 0° ( c ) 0°, 90° ( b ) 120° scale for the position line... Vertical angle theorem ) 90°, the angles in a complete turn add up to 360.., recall that a straight angle is called ∠ABC obtuse angles can form a linear pair angle depends on Latest. Not be supplementary refer to NCERT Solutions for Class 7 Maths lines and true. Following statements and write your answer as true or False we will know more about triangle in article! Aggarwal Solutions and NCERT Solutions for Class 7 Maths with Answers PDF free Download will help two vertically opposite angles can be obtuse true or false. Supplementary angle Download was Prepared based on the Latest exam Pattern and write your answer as true False... Statements and write your answer as true or False answer as true or False consecutive alphabets such as a b! Rd Sharma Solutions, RS Aggarwal Solutions and NCERT Solutions for Class 7 Chapter Wise with PDF. 7 with Answers Chapter 5 lines and angles for better exam preparation and score marks. Corresponding angles acute and one obtuse angle ) 0°, 90° ( d 160°! + 30° ) + 120° = 180° ⇒ x = 60° which means they are parallel ⇒ x° = (! Vertex ( where they cross ), not up/down rays AB and BC at b.
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