document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=538019>Question 538019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of all the interior and exterior angles of a polygon is 2880. how many sides does the polygon have? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #353069 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=353069\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of all the interior and exterior angles of a polygon is 2880. how many sides does the polygon have?<BR>\n" );
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document.write( "The easy way:<BR>\n" );
document.write( "2880/180 = 16<BR>\n" );
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document.write( "The hard way:<BR>\n" );
document.write( "The sum of exterior angles is always 360 degs, so the sum of the interior angles is 2520 degs.<BR>\n" );
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document.write( "sum of int = (n-2)*180 = 2520<BR>\n" );
document.write( "n-2 = 2520/180 = 14<BR>\n" );
document.write( "n = 16 sides </SPAN>\n" );
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