document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1180220>Question 1180220</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given: AB is parallel to DE <BR>\n" );
document.write( "Prove: Triangle ABC is congruent to EDC\r<BR>\n" );
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document.write( "- The figure is forming a vertical angles in the middle, it is like an hourglass.<BR>\n" );
document.write( "- C is in the middle\r<BR>\n" );
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document.write( "FIND:<BR>\n" );
document.write( "1. Alternate interior angles are congruent (STATEMENT)<BR>\n" );
document.write( "2. Vertical Angles Theorem (STATEMENT)<BR>\n" );
document.write( "3. Triangle ABC is congruent to EDC (REASON)\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #809843 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52802)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=809843\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "Make a sketch.\r<BR>\n" );
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document.write( "In the sketch, &nbsp;find all mentioned angles.\r<BR>\n" );
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document.write( "Then use the statement &nbsp;\"C is in the middle\".\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It is &nbsp;VERY &nbsp;BAD way to formulate a &nbsp;MATH &nbsp;statement.\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;but I can interpret it as if the intersection point divides the corresponding segments in equal parts.\r<BR>\n" );
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document.write( "To make your final conclusion about congruency of triangles, use SAS-test of  triangles congruency.\r<BR>\n" );
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