document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1011804>Question 1011804</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The two opposite vertices of a square are (-1, 2) and (3, 2). Find the coordinates of other two vertices.             [ Ans: (1, 0), (1, 4) ]\r<BR>\n" );
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document.write( "This question is from co-ordinate geometry.<BR>\n" );
document.write( "I have got the first part of the answer (1,0) but can't get the other co-ordinate.\r<BR>\n" );
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document.write( "Please help me! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #627565 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=627565\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The diagonals of a square<BR>\n" );
document.write( "bisect each other, and<BR>\n" );
document.write( "are perpendicular to each other.<BR>\n" );
document.write( "The two opposite vertices given are the ends of a horizontal diagonal on line <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=2 ALIGN=MIDDLE  ALT=\"y=2\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "The midpoint of that diagonal is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M%28%28-1%2B3%29%2F2%2C2%29 ALIGN=MIDDLE  ALT=\"M%28%28-1%2B3%29%2F2%2C2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M%281%2C2%29 ALIGN=MIDDLE  ALT=\"M%281%2C2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "That is also the midpoint of the other diagonal,<BR>\n" );
document.write( "which is perpendicular to the horizontal diagonal,<BR>\n" );
document.write( "meaning that it is on the vertical line <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1 ALIGN=MIDDLE  ALT=\"x=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "The length of the horizontal half-diagonals is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-%28-1%29=2 ALIGN=MIDDLE  ALT=\"1-%28-1%29=2\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3-1=2 ALIGN=MIDDLE  ALT=\"3-1=2\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "The length of the vertical half-diagonals must be the same,<BR>\n" );
document.write( "so the two ends are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > units above and below <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M ALIGN=MIDDLE  ALT=\"M\"   DISABLED_style= \"max-width:90%; height:auto;\" > ,<BR>\n" );
document.write( "meaning at (1,2-2)=(1,0) and (1,2+2)=(1,4) . </SPAN>\n" );
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