SOLUTION: how might you determine the number of sides for a polygon whose interior angle sum is 3240

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Question 1013493: how might you determine the number of sides for a polygon whose interior angle sum is 3240
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The formula for doing so is
180(n - 2) where n is the number of sides...we have
180(n - 2) = 3240
divide by 180 and
n - 2 = 18
n = 20 sides, a duodecagon