How can you find the angle sum of a regular polygon?
The n is the number of sides to the polygon or you could look upon it as the number of corners to the polygon. The 2 represents a reduction factor. 2 times 180 gives you 360 which is the sum of the exterior angles to the polygon. 180 is the sum of the interior angle and the exterior angle. 180n is this sum for n – sided polygon. But the sum of the exterior angles of any polygon is 360(2 times 180). This has to be subtracted from the total sum of both the interior and exterior angles to get the sum of the interior angles.
