document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=627741>Question 627741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a regular polygon has it exterior angle been 100 degree less than it interior angle.find:<BR>\n" );
document.write( "1.the number of sides of the polygon<BR>\n" );
document.write( "2.the sum of all the interior angles </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #395097 by </B><A HREF=/tutors/aboutme.mpl?userid=reviewermath><B>reviewermath(1029)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=reviewermath><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=reviewermath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=395097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = interior angle<BR>\n" );
document.write( "so 180 - x = exterior angle<BR>\n" );
document.write( "180 - x = x - 100<BR>\n" );
document.write( "-2x = -280<BR>\n" );
document.write( "x = 140<BR>\n" );
document.write( "the exterior angle measures 180 - x = 180 - 140 = 40 degrees<BR>\n" );
document.write( "To get the number of sides, divide 360 degrees by 40 degrees, the result is 9.\r<BR>\n" );
document.write( "\n" );
document.write( "1. the number of sides is 9, its a nonagon.<BR>\n" );
document.write( "2. the sum of all interior angles is 180(9-2) = 1260 degrees. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );