document.write( "Question 1003640: polygon k has 36 more diagonals and 3 more sides than polygon L. How many sides do each of these polygons have \n" ); document.write( "
Algebra.Com's Answer #620305 by KMST(5328)\"\" \"About 
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\"k\"= number of sides of the polygon K.
\n" ); document.write( "So, \"k%2B3\"= number of sides of polygon L.\r
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\n" ); document.write( "\n" ); document.write( "A polygon with \"n\" sides has \"n\" vertices.
\n" ); document.write( "Each vertex can be connected to each of the other \"n-1\" vertices by a segment.
\n" ); document.write( "Two of those segments will be sides, connecting adjacent vertices.
\n" ); document.write( "The other \"n-1-2=n-3\" segments will be diagonals.
\n" ); document.write( "Each of the \"n\" vertices is involved in \"n-3\" diagonals,
\n" ); document.write( "but since each diagonal involves \"2\" vertices,
\n" ); document.write( "the total number of diagonals for polygon with \"n\" sides is
\n" ); document.write( "\"n%28n-3%29%2F2\" .\r
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\n" ); document.write( "\n" ); document.write( "The total number of diagonals for polygon with \"k\" sides is
\n" ); document.write( "\"k%28k-3%29%2F2\" .
\n" ); document.write( "The total number of diagonals for polygon with \"k%2B3\" sides is
\n" ); document.write( "\"%28k%2B3%29k%2F2\" .
\n" ); document.write( "The problem says that
\n" ); document.write( "\"%28k%2B3%29k%2F2=36%2Bk%28k-3%29%2F2\" .
\n" ); document.write( "We solve for \"k\" .
\n" ); document.write( "\"%28k%2B3%29k%2F2=36%2Bk%28k-3%29%2F2\"
\n" ); document.write( "\"%28k%2B3%29k=72%2Bk%28k-3%29\"
\n" ); document.write( "\"k%5E2%2B3k=72%2Bk%5E2-3k%29\"
\n" ); document.write( "\"3k=72-3k%29\"
\n" ); document.write( "\"6k=72%29\"
\n" ); document.write( "\"k=72%2F6%29\"
\n" ); document.write( "\"k=12%29\"
\n" ); document.write( "\"k%2B3=15\"
\n" ); document.write( "Polygon K has \"highlight%2812%29\" sides, and polygon L has \"highlight%2815%29\" sides.
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