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How many diagonals does a regular polygon have when one of its interior angles measures 165.6 degrees?
Wiki User
∙ 7y ago
If: 180 -165.6 = 14.4 degrees for each exterior angle
Then: 360/14.4 = 25 sides
So: 0.5*(25^2 -3*25) = 275 diagonals
Wiki User
∙ 7y ago
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