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The sum of the interior angles of a polygon with n sides is (n-2)*180 degrees. So, with n = 13, the sum of the interior angles is 11*180 = 1980 degrees.
However, any particular interior angle can have any value between 0 and 360 degrees, (not inclusive of those limits). It is only in the case of a REGULAR polygon that the value of the interior angle can be determined without additional information.
So, if the 13-polygon is regular, then each interior angles is 1980/13 = 1524/13 or 152.3077 degrees.
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What is the size of one interior angle in a regular decagon?
Each interior angle measures 144 degrees
What polygon has an interior angle of 108 degrees?
A Pentagon has an interior angle of 108 degrees.
What polygon has an interior angle of 144 degrees?
Any polygon can have an interior angle of 144 degrees. The measurement of an interior angle of a decagon is 144 degrees.
What is an exterior angle of a triangle?
It is: 180-interior angle = exterior angle
What do you call an angle inside a shape?
Interior angle
