document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1169821>Question 1169821</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ABC is an isosceles triangle with side AB= side AC. Line BC is produced to D such that side AC=side CD. If angle ABC = 2x°, angle BAC=x° and angle ADC=y°, prove that x=y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843784 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=843784\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> AB=AC \r<BR>\n" );
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document.write( "B=C=2x\r<BR>\n" );
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document.write( "In triangle ABC x+2x+2x =180\r<BR>\n" );
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document.write( "5x =180\r<BR>\n" );
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document.write( "x = 36 deg\r<BR>\n" );
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document.write( "In triangle ACD 2y+3x=180\r<BR>\n" );
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document.write( "plug x=36\r<BR>\n" );
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document.write( "2y+108=q80\r<BR>\n" );
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document.write( "2y =72\r<BR>\n" );
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document.write( "y=36 deg\r<BR>\n" );
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document.write( "x=y\r<BR>\n" );
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document.write( " <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=mananth&illustration_name=isos.png\">.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );