document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=15387>Question 15387</A>: <I><SPAN STYLE=\"word-break: break-all;\"> interior andle measure of a regular polygon is given.  Find the number of sides of the polygon.\r<BR>\n" );
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document.write( "168 degrees\r<BR>\n" );
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document.write( "How do I find this? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #7617 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=7617\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Start with the formula for the measure of an interior angle, A, of a regular polygon of n sides:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+%28%28n+-+2%29180%29%2Fn ALIGN=MIDDLE  ALT=\"A+=+%28%28n+-+2%29180%29%2Fn\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=168+=+%28%28n+-+2%29180%29%2Fn ALIGN=MIDDLE  ALT=\"168+=+%28%28n+-+2%29180%29%2Fn\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply both sides by n.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=168n+=+%28n+-+2%29180 ALIGN=MIDDLE  ALT=\"168n+=+%28n+-+2%29180\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify the right sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=168n+=+180n+-+360 ALIGN=MIDDLE  ALT=\"168n+=+180n+-+360\"   DISABLED_style= \"max-width:90%; height:auto;\" > Add 360 to both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=168n+%2B+360+=+180n ALIGN=MIDDLE  ALT=\"168n+%2B+360+=+180n\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 168n from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=360+=+12n ALIGN=MIDDLE  ALT=\"360+=+12n\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 12.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30+=+n ALIGN=MIDDLE  ALT=\"30+=+n\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The regular polygon has 30 sides.<BR>\n" );
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