document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978966>Question 978966</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use coordinate geometry to prove that quadrilateral ABCD is a parallelogram (more than one method is possible)\r<BR>\n" );
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document.write( "Thank you for helping me with this, it is greatly appreciated! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #600341 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=600341\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Since you didn't specify the coordinates of the vertices of quadrilateral ABCD, this quadrilateral could be any quadrilateral.  Since it is NOT true that all quadrilaterals are parallelograms, it is quite possible that ABCD is indeed a quadrilateral that is not a parallelogram.  Hence, what you ask is impossible.  Re-post your question with ALL of the pertinent information.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi}\ +\ 1\ =\ 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large \ \\r\"> </SPAN>\n" );
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