document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191938>Question 1191938</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many sides does a polygon have if the sum of its interior angles is 7 times the sum of its exterior angles?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #823795 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=823795\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sum of interior angles = (n-2)*180<BR>\n" );
document.write( "sum of exterior angles is always 360.<BR>\n" );
document.write( "7*360 = (n-2)*180<BR>\n" );
document.write( "divide both sides of this equation by 180 to get<BR>\n" );
document.write( "7*2 = n-2<BR>\n" );
document.write( "add 2 to both sides of this equation and simplify to get:<BR>\n" );
document.write( "16 = n\r<BR>\n" );
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document.write( "number of sides is equal to 16.<BR>\n" );
document.write( "sum of exterior angle is 360.<BR>\n" );
document.write( "sum of interior angles is 14*180 = 2520<BR>\n" );
document.write( "2520/360 = 7\r<BR>\n" );
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