SOLUTION: the sum of the measures of the interior angles of a convex polygon is 1980. how many sides does the polygon have?

Question 418949: the sum of the measures of the interior angles of a convex polygon is 1980. how many sides does the polygon have?
Found 2 solutions by stanbon, shree840:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
the sum of the measures of the interior angles of a convex polygon is 1980. how many sides does the polygon have?
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Solve: (n-2)180 = 1980
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n-2 = 11
n = 13 (# of sides)
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Cheers,
Stan H.
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Answer by shree840(260) (Show Source): You can put this solution on YOUR website!
Sum of interior angle is (n-2)*180= 1980
dividing by 180
n-2=11
n=13
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