SOLUTION: what is the angle measurement of a regular 13-gon and a regular 20-gon

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Question 254970: what is the angle measurement of a regular 13-gon and a regular 20-gon
Answer by JimboP1977(308) About Me  (Show Source):
You can put this solution on YOUR website!
Interior Angle of regular polygon = 180 times number of sides-360 all divided by the number of sides
I=(180n-360)/n