document.write( "Question 1076154: A regular polygon has twelve diagonals. Find the number of sides? \n" ); document.write( "

Algebra.Com's Answer #690920 by josgarithmetic(39617) $\"\"$ $\"About$

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Try drawing the first few simple regular polygons and draw and count the number of diagonals of each.\r
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\n" ); document.write( "\n" ); document.write( "n number of sides
\n" ); document.write( "d number of diagonals\r
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document.write( "n        d\r\n" );
document.write( "3        0\r\n" );
document.write( "4        2\r\n" );
document.write( "5        5\r\n" );
document.write( "6        9\r\n" );
document.write( "7       14\r\n" );
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\n" ); document.write( "NO such regular polygon will have 12 diagonals.
\n" ); document.write( "No convex polygon will have 12 diagonals. \n" ); document.write( "

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