document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1093136>Question 1093136</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A regular polygon has an interior angle of 144 degree, calculate the number of sides polygon has </SPAN>\n" );
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document.write( "Since the interior angle is 144 degree, each exterior angle is 180 - 144 = 36 degrees.\r<BR>\n" );
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document.write( "For any convex polygon (in particularly, for any regular polygon) the sum of exterior angles is 360 degrees.\r<BR>\n" );
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document.write( "Hence, the number of sides = the number of vertices = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=360%2F36 ALIGN=MIDDLE  ALT=\"360%2F36\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 10.\r<BR>\n" );
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document.write( "<U>Answer</U>.  Your polygon is decagon with 10 sides (vertices).\r<BR>\n" );
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