Civil Service Exam Reviewer · Measurement and Geometry · medium
What is the measure of each interior angle of a regular polygon with 18 sides?
- 20°
- 2880°
- 160°
- 30°
Answer
C. 160°
Solution
Each angle = (n − 2) × 180° ÷ n = 2880 ÷ 18 = 160°.
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