# SOLUTION: The sum of the interior angle measures of a convex polygon is 1980 degrees . How many sides does it have?

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 Question 405814: The sum of the interior angle measures of a convex polygon is 1980 degrees . How many sides does it have?Found 2 solutions by Alan3354, MathLover1:Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!Sum = 180*(n-2) = 1980 n-2 = 11 n = 13 Answer by MathLover1(6627)   (Show Source): You can put this solution on YOUR website! If a polygon has sides, then its is given by the following equation: °. ......plug in your sum and solve for