document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=99261>Question 99261</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0028243145/algebrahomeworkh>Advanced Mathematical Concepts </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I have four coordinates, and i want to know how to figure out if the four points make a parallelogram? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #72217 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=72217\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plot the four points and label them A,B,C,D.<BR>\n" );
document.write( "If AB is opposite CD show that their slopes and their lengths are the same.<BR>\n" );
document.write( "If BD and AC are opposite show the same about their slopes and lengths.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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