SOLUTION: What are the measures of the interior and exterior angles of a regular 20-gon, 30-gon, and 36-gon?

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Question 453742: What are the measures of the interior and exterior angles of a regular 20-gon, 30-gon, and 36-gon?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The exterior angles = 360/n
The interior = 180 - exterior
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For the 20-gon:
Ext = 360/20 = 18 degs
Int = 180 - 18 = 162