Page 651 - Basic College Mathematics with Early Integers

628 C HAPTE R 9 I GEOMETRY

List two other ways to name each angle. See Example 2.

9. ∠x
C
10. ∠w
w x P R
A
11. ∠z y z T
Q
12. ∠y M

Objective Classify each angle as acute, right, obtuse, or straight. See Example 3.

13. 14. 15. 16.
S
R
T
H

17. Q 18. 19. P 20. N
M

Objective Find each complementary or supplementary angle as indicated. See Examples 4 and 5.

21. Find the complement of a 23° angle. 22. Find the complement of a 77° angle.
23. Find the supplement of a 17° angle. 24. Find the supplement of a 77° angle.

25. Find the complement of a 58° angle. 26. Find the complement of a 22° angle.

27. Find the supplement of a 150° angle. 28. Find the supplement of a 130° angle.

29. Identify the pairs of complementary angles. 30. Identify the pairs of complementary angles.

P Q D
C
20
52 38 R 70
60 E
30 63
27
M N O
B A F
31. Identify the pairs of supplementary angles. 32. Identify the pairs of supplementary angles.
T
135 N X
Q
38
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45 45
P
142 M 142
S 135 R
38
Y Z