An angle of 220 degrees is a reflex angle
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220 degrees
multiply the degree by (pi/180)
7 degrees
If it is a regular nonagon, then you use the following formula: [(s-2) x 180]/s = angle of one interior angle. (s means the number of sides) Then solve: [(s-2) x 180]/s = [(9-2) x 180]/9 = [7 x 180]/9 = 1260/9 = 140. Then, for the exterior angle, subtract 140 from 360. The measure of the exterior angle of a regular nonagon is 220.
220 feet by 220 feet is 43500 square feet. An acre equals 48400 square feet. Therefore the answer is no.