document.write( "Question 418949: the sum of the measures of the interior angles of a convex polygon is 1980. how many sides does the polygon have? \n" ); document.write( "
Algebra.Com's Answer #293049 by stanbon(75887)\"\" \"About 
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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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\n" ); document.write( "Solve: (n-2)180 = 1980
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\n" ); document.write( "n-2 = 11
\n" ); document.write( "n = 13 (# of sides)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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