Question: how to find the measure of an interior angle of a nonagon?
Answer: Nonagon is a nine-sided polygon or 9-gon.
Sum of interior angles of a polygon with n sides T= (2n-4) x 90°
For Nonagon, n=9.
T= (2 x9–4) x 90° = 14 x 9 = 1260°
Each interior angle = 1260°/9 = 140°
Ans: Sum of interior angles = 1260°; Each interior angle = 140°
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