document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=582688>Question 582688</A>: <I><SPAN STYLE=\"word-break: break-all;\"> quadrilateral ABCD is a parallelogram. If adjacent angles are congruent, which statement must be true. I know that the answer is Quadrilateral ABCD is a rectangle but I need to know why it is a rectangle and not a square. Thank you  in advanced for your help I really need it. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #372170 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=372170\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The opposite sides of a parallelogram are congruent.\r<BR>\n" );
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document.write( "Opposite angles are also congruent.\r<BR>\n" );
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document.write( "Hence it is a rectangle\r<BR>\n" );
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document.write( "In a square all sides are congruent. </SPAN>\n" );
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