document.write( "Question 277787: how many sides does a regular polygon have if the sum of its interior angle measures is 3240? \n" ); document.write( "
Algebra.Com's Answer #202192 by unlockmath(1688)\"\" \"About 
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Hello,
\n" ); document.write( "There is a formula to follow which is:
\n" ); document.write( "(n-2)180=total interior angle degrees. So we can plug in the known value:
\n" ); document.write( "(n-2)180=3240 Rewritten as:
\n" ); document.write( "180n-360=3240 Add 360 to both sides and divide by 180 to get:
\n" ); document.write( "n=20
\n" ); document.write( "There we go, 20 sides.
\n" ); document.write( "Make sense?
\n" ); document.write( "RJ
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