document.write( "Question 311864: find the sum of the measures of the interior angles of a decagon \n" ); document.write( "
Algebra.Com's Answer #223017 by Alan3354(69443)\"\" \"About 
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The for n sides is
\n" ); document.write( "(n-2)*180
\n" ); document.write( "(10 - 2)*180 = 8*180
\n" ); document.write( "= 1440º
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