document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=402605>Question 402605</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you find the value of x in a four sided polygon with angle measures 130, 110, x-3 and x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #284754 by </B><A HREF=/tutors/aboutme.mpl?userid=algebrahouse.com><B>algebrahouse.com(1659)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=algebrahouse.com><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=algebrahouse.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=284754\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"how do you find the value of x in a four sided polygon with angle measures 130, 110, x-3 and x\"\r<BR>\n" );
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document.write( "A four-sided polygon is a quadrilateral, like a square or a rectangle.<BR>\n" );
document.write( "In a quadrilateral, all of the interior angles add up to 360 degrees.\r<BR>\n" );
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document.write( "130 + 110 + x - 3 + x = 360 {added all the angles and set equal to 360}<BR>\n" );
document.write( "2x + 237 = 360 {combined like terms}<BR>\n" );
document.write( "2x = 123 {subtracted 237 from both sides}<BR>\n" );
document.write( "x = 61.5 {divided both sides by 2}<BR>\n" );
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