SOLUTION: if each interior angle of a regular polygon measures 135 degrees, the polygon must be?

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Question 290837: if each interior angle of a regular polygon measures 135 degrees, the polygon must be?
Answer by Greenfinch(383) About Me  (Show Source):
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If interior angle is 135 degrees, the exterior angle is 45 degrees. The total exterior angles is always 360 degrees. so there are 8 sides