The sum of the interior angles of an n-gon is (n-2)*180 degrees
So for n = 14, the sum is 12*180 = 2160
So each of the 14 angles is 2160/14 = 154.285714... degrees
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the measure for a regular rectangle is 69in. by fudge you and measure it yourself.
An interior angle of a regular octagon is 45 degrees. The exterior angles measure 315 degrees.
The measure of each interior angle of a fifteen sided regular polygon, a pendedecagon, is 156o.
Each exterior angle will measure 9 degrees
A regular polygon having an interior angle measure of 168o has 30 sides and is called a triacontagon.