You can put this solution on YOUR website! The sum of the interior angles of an n-sided polygon is 360 degrees.
To find the measure of an interior angle, divide by n. degrees.
You can put this solution on YOUR website! The sum of the exterior angles = 360
Each exterior angle = 360/14 = 180/7
Each interior angle = 180 - (180/7) = 1260/7 - 180/7
= 1080/7 degs
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The sum of the interior angles = 180*(n-2) = 180*12 = 2160 degs
Each angle = 2160/14 = 1080/7 degs