SOLUTION: Find the measure of one exterior angle of a regular polygon that has 21 sides. Round your answer to one decimal place.

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Question 600309: Find the measure of one exterior angle of a regular polygon that has 21 sides. Round your answer to one decimal place.
Answer by w_parminder(53) About Me  (Show Source):
You can put this solution on YOUR website!
To find the exterior angle of a regular polygon with 'n' sides, simply divide 360 by n
i.e. 360/n
In this case, the measure of the angle is 360/21
i.e. 17.1 (approximately)
To find the interior angle, subtract the exterior angle from 180, OR use the formula
Measure of interior angle of a regular polygon with 'n' sides = 180*%28+1-2%2Fn+%29
In this case, the interior angle = 180 - 17.1 = 162.9 (approximately)