document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1141290>Question 1141290</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have an isosceles triangle: On top of the triangle is a line with points A and B.The triangle is labeled with E on top, C on bottom left and D on bottom right. Under the parallel line are the numbers 1 and 2 to the top left and top right of the triangle.<BR>\n" );
document.write( "I am so confused.<BR>\n" );
document.write( "How to write a two column proof:<BR>\n" );
document.write( "Given: Line AB is parallel to line CD; line EC is congruent to line ED<BR>\n" );
document.write( "Prove: Angle 1 is congruent to angle 2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #761821 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=761821\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given: Line AB is parallel to line CD; line EC is congruent to line ED<BR>\n" );
document.write( "Prove: Angle 1 is congruent to angle 2. \r<BR>\n" );
document.write( "\n" );
document.write( "1. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=AB ALIGN=MIDDLE  ALT=\"AB\"   DISABLED_style= \"max-width:90%; height:auto;\" > ||<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+CD ALIGN=MIDDLE  ALT=\"+CD\"   DISABLED_style= \"max-width:90%; height:auto;\" >............given<BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EC ALIGN=MIDDLE  ALT=\"EC\"   DISABLED_style= \"max-width:90%; height:auto;\" >  congruent <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+ED ALIGN=MIDDLE  ALT=\"+ED\"   DISABLED_style= \"max-width:90%; height:auto;\" >............given<BR>\n" );
document.write( "3. <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ECD ALIGN=MIDDLE  ALT=\"ECD\"   DISABLED_style= \"max-width:90%; height:auto;\" > congruent <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CDE ALIGN=MIDDLE  ALT=\"CDE\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........................the Isosceles Triangle Theorem<BR>\n" );
document.write( " 4.<<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ECD ALIGN=MIDDLE  ALT=\"ECD\"   DISABLED_style= \"max-width:90%; height:auto;\" > congruent <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.................... Alternate Interior Angles are equal<BR>\n" );
document.write( "5.<<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CDE ALIGN=MIDDLE  ALT=\"CDE\"   DISABLED_style= \"max-width:90%; height:auto;\" > congruent <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1 ALIGN=MIDDLE  ALT=\"1\"   DISABLED_style= \"max-width:90%; height:auto;\" >....................Alternate Interior Angles are equal\r<BR>\n" );
document.write( "\n" );
document.write( "6. <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1 ALIGN=MIDDLE  ALT=\"1\"   DISABLED_style= \"max-width:90%; height:auto;\" > congruent <<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" >..............transitive property\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing+%28+600%2C600%2C+-5%2C+10%2C+-5%2C+10%2C+%0D%0Acircle%281%2C0%2C.12%29%2Clocate%281%2C-0.5%2CC%29%2C%0D%0Acircle%289%2C0%2C.12%29%2Clocate%289%2C-0.5%2CD%29%2C%0D%0Acircle%285%2C6%2C.12%29%2Clocate%285%2C6%2CE%29%2C%0D%0Aline%281%2C0%2C5%2C6%29%2Cline%289%2C0%2C5%2C6%29%2Cline%281%2C6%2C9%2C6%29%2Clocate%289%2C6%2CB%29%2Clocate%281%2C6%2CA%29%2Clocate%283%2C5%2C1%29%2Clocate%287%2C5%2C2%29%2C+locate%281.5%2C0.5%2CECD%29%2Clocate%288%2C0.5%2CCDE%29%2C%0D%0Agraph%28+600%2C600%2C+-5%2C+10%2C+-5%2C+10%2C+0%29%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );