document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=949702>Question 949702</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the precise name of a quadrilateral with vertices (-1,2), (3,4), (5,0), (1,-2)?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #579830 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=579830\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the precise name of a quadrilateral with vertices (-1,2), (3,4), (5,0), (1,-2)? <BR>\n" );
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document.write( "Label the vertices:<BR>\n" );
document.write( "A(-1,2), B(3,4), C(5,0), D(1,-2)<BR>\n" );
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document.write( "Find the lengths of the sides.<BR>\n" );
document.write( "If they're the same length, it's a parallelogram.<BR>\n" );
document.write( "Find the slope of AB and BC.<BR>\n" );
document.write( "If AB is perpendicular to BC, and the lengths are equal, it's a square.<BR>\n" );
document.write( "Start with that. </SPAN>\n" );
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