# SOLUTION: How do you find the measures of interior angles on a pentagon?

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 Question 416509: How do you find the measures of interior angles on a pentagon?Answer by stanbon(57377)   (Show Source): You can put this solution on YOUR website!How do you find the measures of interior angles on a pentagon? --- If it's a regular pentagon, there are 5 exterior angles. --- Sum of those angles is 360 --- Each ext. angle is 360/5 = 72 degrees. ==== So, each interior angle is 180-72 = 108 degrees. ============================= Another way to do it. Sum of the interior angles is (n-2)180 = 3*180 = 540 Then 540/5 = 108 degrees. ============================== Cheers, Stan H. ===========