document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=882689>Question 882689</A>: <I><SPAN STYLE=\"word-break: break-all;\"> D(5, 7), E(4, 3), and F(8, 2) form the vertices of a triangle. What is<BR>\n" );
document.write( "m DEF? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #533003 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=533003\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-2%2C10%2C-2%2C10%2Cgrid%281%29%2Ccircle%285%2C7%2C0.2%29%2C%0D%0Acircle%284%2C3%2C0.2%29%2Ccircle%288%2C2%2C0.2%29%2C%0D%0Aline%285%2C7%2C4%2C3%29%2C%0D%0Aline%284%2C3%2C8%2C2%29%2C%0D%0Aline%288%2C2%2C5%2C7%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Calculate the edge lengths,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DE%5E2=%285-4%29%5E2%2B%287-3%29%5E2 ALIGN=MIDDLE  ALT=\"DE%5E2=%285-4%29%5E2%2B%287-3%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DE%5E2=1%2B16 ALIGN=MIDDLE  ALT=\"DE%5E2=1%2B16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DE%5E2=17 ALIGN=MIDDLE  ALT=\"DE%5E2=17\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DF%5E2=%285-8%29%5E2%2B%287-2%29%5E2 ALIGN=MIDDLE  ALT=\"DF%5E2=%285-8%29%5E2%2B%287-2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DF%5E2=9%2B25 ALIGN=MIDDLE  ALT=\"DF%5E2=9%2B25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DF%5E2=34 ALIGN=MIDDLE  ALT=\"DF%5E2=34\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EF%5E2=%284-8%29%5E2%2B%283-2%29%5E2 ALIGN=MIDDLE  ALT=\"EF%5E2=%284-8%29%5E2%2B%283-2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EF%5E2=16%2B1 ALIGN=MIDDLE  ALT=\"EF%5E2=16%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EF%5E2=17 ALIGN=MIDDLE  ALT=\"EF%5E2=17\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "The triangle is an isosceles (two equal sides) and right triangle (<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=DE%5E2%2BEF%5E2=DF%5E2 ALIGN=MIDDLE  ALT=\"DE%5E2%2BEF%5E2=DF%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >).<BR>\n" );
document.write( "So then the angles are 45-45-90. <BR>\n" );
document.write( "Angle DEF is 90.<BR>\n" );
document.write( " </SPAN>\n" );
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