If two adjacent angles are supplementary, then they form _____ . (c) When a transversal cuts two parallel lines, each pair of interior angles on the same side of the transversal are supplementary. Solution: True. Students can also refer to NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles for better exam preparation and score more marks. : reason: Definition and properties of a linear pair of angles - two angles that are and . Therefore, each of these pairs is also a pair of supplemental angles since their sum is a straight_ angle. 14. An acute and an obtuse angle are always supplementary. (a) a linear pair of angles (b) vertically opposite angles (c) Corresponding angles (d) a ray. (e) Vertically opposite angles. Both angles of a pair of supplementary angles can never be acute angles. True or False: If two angles form a linear pair, then they are not supplementary angles. Example 2: the angles form a line (linear pair) therefore they are supplementary Example 3: the angles can be non-adjacent as long as their sum is 180° 110°+ 70° = 180° The sum is 180° therefore they are supplementary. for example: if you have two parallel lines, an angle is supplementary to a linear pair of a corresponding angle, even if it is not a linear pair with that angle. Two supplementary angles always form a linear pair. Question 64. When the sum of the measures of two angles is 90°, the angles are called Example 4: 1 and 2 form a linear pair so m 1 + m 2 = 180° therefore the angles are supplementary. 2) If two adjacent angles are equal , then each angle measure 90° . Write 'True' or 'False' for the following statements. True or False: If the noncommon sides of two adjacent angles form a right angle, then the angles are complementary angles… Below, angles FCD and GCD are supplementary since they form straight angle FCG. Lines and Angles Class 7 MCQs Questions with Answers. Name any four pairs. linear pairs are always supplementary, but not the other way around. This is true for all exterior angles and their interior adjacent angles in any convex polygon. Angles /_1 and /_3 are vertical, as well as angles /_2 and /_4. 27. Supplementary angles can be adjacent. False. Two acute angles are always complementary. One obtuse angle and one acute angle can make a pair of supplementary angles. (means the sum of both doesn't have to be exactly or degrees ) Linear pairs are adjacent and supplementary. 1/2 4/3 (c) Adjacent supplementary angles form a linear pair… (a) When a transversal cuts two parallel lines, each pair of corresponding angles are equal. Question 62. True or False: Angles supplementary to the same angle or to congruent angles are congruent. (b) When a transversal cuts two parallel lines, each pair of alternate interior angles are equal. Solution: True. n (b) Supplement of a right angle is a right angle. Answer: (a) a linear pair of angles : reason: Definition and properties of adjacent angles - those that share a common leg or ray. 1) Angles forming a linear pair are supplementary . True. false. Any two right angles are supplementary. Question 63. Question 1. Adjacent angles are supplementary or complementary. Regardless of how wide you open or close a pair of scissors, the pairs of adjacent angles formed by the scissors remain supplementary. 8. How many other linear pairs can you see in the diagram? See the picture below that represents angles formed by perpendicular lines. (a) Two obtuse angles can be supplementary. In addition, since lines are perpendicular to each other, all angles are congruent. Answer. Which of the following statements is false? 3) 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 . Write true or false . Solution: True. 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