document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=991588>Question 991588</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How to prove a parallelogram 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 #611476 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52847)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=611476\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Prove that at least one interior angle is the right angle.\r<BR>\n" );
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document.write( "Or prove that some two adjacent sides are perpendicular.\r<BR>\n" );
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document.write( "It is the same.\r<BR>\n" );
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