One obtuse angle and one acute angle can make a pair of supplementary angles. n (b) Supplement of a right angle is a right angle. True or False: If two angles form a linear pair, then they are not supplementary angles. True or False: If the noncommon sides of two adjacent angles form a right angle, then the angles are complementary angles… Solution: True. : reason: Definition and properties of adjacent angles - those that share a common leg or ray. Below, angles FCD and GCD are supplementary since they form straight angle FCG. Question 62. 2) If two adjacent angles are equal , then each angle measure 90° . Lines and Angles Class 7 MCQs Questions with Answers. Therefore, each of these pairs is also a pair of supplemental angles since their sum is a straight_ angle. True or False: Angles supplementary to the same angle or to congruent angles are congruent. 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. : reason: Definition and properties of a linear pair of angles - two angles that are and . (b) When a transversal cuts two parallel lines, each pair of alternate interior angles are equal. Which of the following statements is false? false. Write true or false . Write 'True' or 'False' for the following statements. False. See the picture below that represents angles formed by perpendicular lines. In addition, since lines are perpendicular to each other, all angles are congruent. If two adjacent angles are supplementary, then they form _____ . Example 4: 1 and 2 form a linear pair so m 1 + m 2 = 180° therefore the angles are supplementary. Any two right angles are supplementary. Regardless of how wide you open or close a pair of scissors, the pairs of adjacent angles formed by the scissors remain supplementary. 8. (a) Two obtuse angles can be supplementary. How many other linear pairs can you see in the diagram? An acute and an obtuse angle are always supplementary. When the sum of the measures of two angles is 90°, the angles are called 14. Name any four pairs. (means the sum of both doesn't have to be exactly or degrees ) Linear pairs are adjacent and supplementary. Answer. (c) When a transversal cuts two parallel lines, each pair of interior angles on the same side of the transversal are supplementary. True. Two supplementary angles always form a linear pair. The intersection of two rays creates two pairs of vertical angles and four pairs of supplementary angles. (e) Vertically opposite angles. Two acute angles are always complementary. If the sum of two angles is 180 degrees then they are said to be supplementary angles, which forms a linear angle together.Whereas if the sum of two angles is 90 degrees, then they are said to be complementary angles, and they form a right angle together. How many pairs of linear pair are there in the figure? Solution: True. 1/2 4/3 (c) Adjacent supplementary angles form a linear pair… 27. Adjacent angles are supplementary or complementary. 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. Question 63. linear pairs are always supplementary, but not the other way around. Students can also refer to NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles for better exam preparation and score more marks. Question 1. Question 64. 1) Angles forming a linear pair are supplementary . Answer: (a) a linear pair of angles 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 . Use the following figure to answer practice problem 21. Solution: True. (a) When a transversal cuts two parallel lines, each pair of corresponding angles are equal. Both angles of a pair of supplementary angles can never be acute angles. This is true for all exterior angles and their interior adjacent angles in any convex polygon. Supplementary angles and complementary angles are defined with respect to the addition of two angles. (a) a linear pair of angles (b) vertically opposite angles (c) Corresponding angles (d) a ray. Angles /_1 and /_3 are vertical, as well as angles /_2 and /_4. Supplementary angles can be adjacent.

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## Powering a Green Planet

### Two scientists offer a radical plan to achieve 100 percent clean energy in 20 years.

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## Hungry Like a Wolf

### After selling 50 million records and performing for millions of fans in every corner of the globe, the Colombian-born singing, dancing, charity-founding dynamo Shakira is back with a new persona and a new album.

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I couldn't agree more with Mr. Hills assessment that Obama needs to acquire some of the traits of his tenacious predessors including, as Mr. Hill suggests, the king of the political fight ,LBJ. But the big problem is that LBJ did not have to content with the professional lobbyists as they exist today nor soft and hard money abused legally by our elected officials. Obama's task on the reformation of heath care would be much easier without all the PAC money and influence of pro lobbyists as it would limit the reach of the lies and distortions into the heart of the citizens of our country.

Mark Altekruse