NAME _____________________________________________ DATE __________________ PERIOD _________
Lesson 4 Skills Practice
Polygons and Angles
Find the sum of the interior angle measures of each polygon.
2.
1.
180°
4.
3.
360°
720°
5.
1,440°
360°
Find the sum of the interior angle measures of each polygon.
7. 13-gon 1,980°
8. 18-gon 2,880°
9. 32-gon 5,400°
10. 35-gon 5,940°
Find the measure of one interior angle in each regular polygon.
Round to the nearest tenth if necessary.
11. heptagon (7-sided) 128.6°
12. 26-gon 166.2°
13. decagon (10-sided) 144°
14. 23-gon 164.3°
80
Course 3 • Chapter 5 Triangles and the Pythagorean Theorem
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
540°
6.