Name _______________________________________ Date __________________ Class __________________
Angle Relationships in Parallel Lines and Triangles
Module 21 Study Guide
Use the figure for 1 and 2.
4. Which of the following is an exterior angle of
triangle BHE? Select Yes or No.
1. Which pairs of angles are alternate exterior
angles? Select Yes or No.
A 7 and 4
Yes
No
B 2 and 6
Yes
No
C 8 and 1
Yes
No
A GHE
Yes
No
D 2 and 7
Yes
No
B ABH
Yes
No
C DEB
Yes
No
D FED
Yes
No
2. Which of these angles is congruent
to 5? Select Yes or No.
5.What is the measure of x?
A 8
Yes
No
B 6
Yes
No
C 1
Yes
No
D 4
Yes
No
--- x ----3. The measures of three angles of a triangle
are given by (8x  5), (2x), and
(3x  10). What is the measure of the largest
angle?
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Name _______________________________________ Date __________________ Class __________________
MODULE
21
Angle Relationships in Parallel Lines and Triangles
Module Quiz: B
Use the diagram for 1114.
6. What is the measure of 1?
10.Which of the following terms best
describes the relationship between
w and x?
A corresponding angles
B same-side interior angles
C alternate interior angles
7. What is the measure of 2?
11. Which of the following pairs of angles are
corresponding angles?
A z and x
B t and x
C w and t
12. Which of the following pairs of angles are
congruent?
8. What is the measure of 4?
A w and z
B y and x
C w and y
9. What is the measure of 5?
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96
Name _______________________________________ Date __________________ Class __________________
MODULE
21
Angle Relationships in Parallel Lines and Triangles
Module Quiz: D
17.Are the triangles below similar? Explain
your answer.
13. What is the measure of the unlabeled
angle of the triangle below?
A 90
B 82
C 98
Use the figure for 14–16
14. Which of the following angle or angles
are remote interior angle(s) to d?
A a
B a and b
18.What is the measure of b? Show your
work.
C c
15. Which of the following expressions is
equal to the measure of d?
A ma  mb
B mc  mb
C ma
16. Which of the following terms best
describes d?
A remote interior angle
B corresponding angle
C exterior angle
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98
Name _______________________________________ Date __________________ Class __________________
MODULE 21 Angle Relationships in Parallel Lines and Triangles
1. A No B No C Yes D Yes
2. A Yes B No C Yes D Yes
3. 115
4. A Yes B Yes C Yes D No
5. 6 in.
6. 98
7. 139
8. 123
9. 123
10. B
11. B
12. C
13. B
14. B
15. A
16. C
17. No, they are not similar because only
one angle of the triangles is congruent. The angle measures in the triangle at left are 46, 90,
and 44. In the triangle at right, the angle measures are 46, 38, and 96.
18. 117  81  b
36  b
b  36
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