document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=340314>Question 340314</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In an isosceles triangle, of the ratio of the vertex angle to the base angle is 1: 4, what is the degree measure the base angle?\r<BR>\n" );
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document.write( "(a)20 (b) 30 (c) 36 (d) 40 (e) 80 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #243826 by </B><A HREF=/tutors/aboutme.mpl?userid=Jk22><B>Jk22(389)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Jk22><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=Jk22><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=243826\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> v=vertex angle in °, b=base angle in °\r<BR>\n" );
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document.write( "data) v/b=1/4=>b=4v\r<BR>\n" );
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document.write( "condition) b+v+b=180 (isocele triangle has 2 same vertex angle)\r<BR>\n" );
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document.write( "=> 9v=180 => v=20<BR>\n" );
document.write( "=> solution (a) </SPAN>\n" );
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