document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1022366>Question 1022366</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a) Show that the triangle with vertices D(-1,0), E(1,0) and F(0,&#8730;3) is equilateral. \r<BR>\n" );
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document.write( "b) List the coordinates of the vertices of another equilateral triangle </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #638164 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=638164\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The base of the triangle which is the segment DE clearly has length 2.<BR>\n" );
document.write( "The point (0, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%283%29 ALIGN=MIDDLE  ALT=\"sqrt%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >) is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%283%29 ALIGN=MIDDLE  ALT=\"sqrt%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > units above the x-axis and lies on the positive y-axis.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=abs%28EF%29+=+sqrt%28+%281-0%29%5E2+%2B+%280-sqrt%283%29%29%5E2%29+=+sqrt%281%2B3%29+=+sqrt%284%29+=+2 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Similarly, \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=abs%28DF%29+=+sqrt%28+%28-1-0%29%5E2+%2B+%280-sqrt%283%29%29%5E2%29=+sqrt%281%2B3%29+=+sqrt%284%29+=+2 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Therefore the triangle is equilateral. </SPAN>\n" );
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