Download Practice 3-5 The Polygon Angle-Sum Theorems

Name
Class
Date
Practice 3-5
The Polygon Angle-Sum Theorems
Find the values of the variables for each polygon. Each is a regular polygon.
1. x ,y
2. n 3. a y
a
n
x
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,b
b
Find the missing angle measures.
4.
5.
A
x
6.
H
124 150
B
G
91
93
E 160
F
D
L
100 80
C
48
P
I
112
M
130
J
x
K
71
x
N
For a regular 12-sided polygon, find each of the following.
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7. the measure of an exterior angle
8. the measure of an interior angle
The measure of an interior angle of a regular polygon is given. Find the
number of sides.
9. 120
10. 108
Identify each item in Exercises 11–14 in the figure.
B
11. quadrilateral
12. exterior angle
F
A
13. pair of supplementary angles
14. pentagon
E
D
L1
Practice
C
Geometry Lesson 3-5
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