SOLUTION: Find each interior angle of a regular pentagon.

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Question 392473: Find each interior angle of a regular pentagon.
Answer by richard1234(7193) About Me  (Show Source):
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The formula for each interior angle of a regular n-gon is y+=+%28180%28n-2%29%29%2Fn (simply because there are n-2 non-overlapping triangles that can be drawn within the n-gon, divide by n to obtain each measure).

If n is 5, replace n = 5 to obtain the interior angle measure: y+=+%28180%283%29%29%2F5+=+108 (degrees)