1. Special Pairs of Angles Return to table of contents

2. Congruent Angles have the same angle measurement.

3. 14Are the two angles congruent? 75 o 110 o A Yes B No

4. 15Are the two angles congruent angles? 40 o A Yes B No

5. 16Are the two angles congruent? 75 o 105 o A Yes B No

6. Complementary Angles are two angles with a sum of 90 degrees. These two angles are complementary angles because their sum is 90. Notice that they form a right angle when placed together.

7. Complementary Angles are two angles with a sum of 90 degrees. These two angles are complementary angles because their sum is 90. Although they aren't placed together, they can still be complementary.

8. 17 What is the measure of  A? 50  AA

9. 18 57  575757 57 What is the measure of  A? AA

10. 19Tell whether the two angles are complementary? Angle 1 = 63 degrees Angle 2 = 27 degrees A Yes B No

11. 20Tell whether the angles are complementary. Angle 1 = 146 degrees Angle 2 = 44 degrees A Yes B No

12. Supplementary Angles are two angles with a sum of 180 degrees. These two angles are supplementary angles because their sum is 180. Notice that they form a straight angle when placed together.

13. Supplementary Angles are two angles with a sum of 180 degrees. These two angles are supplementary angles because their sum is 180. Although they aren't placed together, they can still be supplementary.

14. 21What is the measurement of angle A? Angle A 125 o

15. 22What is the measurement of angle A? Angle A 40 o

16. 23Tell whether the two angles are supplementary. Angle 1 = 115 degrees Angle 2 = 65 degrees A Yes B No

17. 24 Find the supplement of 51 

18. 25 Find the complement of 51 

19. 26 Find the complement of 27 

20. 27 Find the supplement of 27 

21. 28 Find the supplement of 102 

22. 29 Find the complement of 102 