document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=424457>Question 424457</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A base angle of an isosceles triangle measures 18 degrees. Find the measure of the vertex angle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #295894 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=295894\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     A base angle of an isosceles triangle measures 18 degrees. Find the measure of the vertex angle.<BR>\n" );
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document.write( "Base angles of an isosceles triangle are equal.<BR>\n" );
document.write( "And, sum of the three interior angles of a triangle is 180 degrees.<BR>\n" );
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document.write( "Let v = vertex angle<BR>\n" );
document.write( "then<BR>\n" );
document.write( "v + 18 + 18 = 180<BR>\n" );
document.write( "v + 36 = 180<BR>\n" );
document.write( "v = 144 degrees </SPAN>\n" );
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