Find the measure of an interior angle and an exterior angle of a regular octagon

Since the pentagon is a regular pentagon, the measure of each interior angle will be the same. To find the size of each angle, divide the sum, 540º, by the number of angles in the pentagon. (which is the same as the number of sides). There are 108° in each interior angle of a regular pentagon.

11/2.2 = 5 inches for the length 8.5/2.2= 3.86 inches for the width