document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920277>Question 920277</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I do nit understand how to solve proofs. I have a proof that given triangle abc with exterior angle angle acd and the given is the measure of angle acd equals the measure of angle a plus the measure of angle b. I am totally lost on how to do it. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558264 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558264\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In triangle ABC \r<BR>\n" );
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document.write( "A + B +C = 180 degrees ( sum of angles of a triangle)\r<BR>\n" );
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document.write( "Angle ACB + Angle ACD = 180 degrees  ( Linear angle)\r<BR>\n" );
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document.write( "Therefore \r<BR>\n" );
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document.write( "A + B +C = angle ACB + Angle ACD\r<BR>\n" );
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document.write( "Angle C is common \r<BR>\n" );
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document.write( "So A+B = angle ACD\r<BR>\n" );
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document.write( " </SPAN>\n" );
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