document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=59941>Question 59941</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to prove that verticle angles are congruent.\r<BR>\n" );
document.write( "\n" );
document.write( "They gave me a diagram that shows 2 intersecting lines .<BR>\n" );
document.write( "the < on the left it labeled 1<BR>\n" );
document.write( "the < on the right is labeled 3.<BR>\n" );
document.write( "and the < on the top is labeled 2.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #41181 by </B><A HREF=/tutors/aboutme.mpl?userid=jenrobrody><B>jenrobrody(19)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jenrobrody><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=41181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <1 and <2 are supplementary since they are adjacent.  so <1+<2=180<BR>\n" );
document.write( "<2 and <3 are supplementary for the same reason.   so <2+<3=180<BR>\n" );
document.write( "solve for <1:   <1 = 180 - <2<BR>\n" );
document.write( "solve for <3:   <3 = 180 - <2<BR>\n" );
document.write( "<1 and <3 are equal to the same thing, so <1 = <3 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );