document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=519245>Question 519245</A>: <I><SPAN STYLE=\"word-break: break-all;\">  True OR FALSE!>if all angles of quadrilateral are congruent then the quadrilateral is a rectangle?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345514 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=345514\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of the interior angles of a polygon = (n-2)*180, when n = number of sides.<BR>\n" );
document.write( "Given the polygon has four sides,<BR>\n" );
document.write( "Then the four interior angles total (4-2)*180 = 2*180 = 360 degrees.<BR>\n" );
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document.write( "Note a four-sided polygon is called a quadrilateral.<BR>\n" );
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document.write( "Congruent angles are equal.<BR>\n" );
document.write( "Given the angles are congruent,<BR>\n" );
document.write( "Then the four interior angles are 360/4 = 90 degree each.<BR>\n" );
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document.write( "A quadrilateral with four 90-degree interior angles is a rectangle.<BR>\n" );
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document.write( "Done. </SPAN>\n" );
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