document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=717752>Question 717752</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the measure of each base angle of an isosceles triangle if its third angle measures 36 degrees and its two congruent sides measures 20 units? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #440497 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=440497\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The base angles of an isosceles triangle are equal. <BR>\n" );
document.write( "Let b = measure of the base angle. Since the sum of the angles is 180 degrees we have<BR>\n" );
document.write( "(1) b + b + 36 = 180 or<BR>\n" );
document.write( "(2) 2*b = 180 - 36 or<BR>\n" );
document.write( "(3) 2*b = 144 or<BR>\n" );
document.write( "(4) b = 72<BR>\n" );
document.write( "Check this.<BR>\n" );
document.write( "Is ( 72 + 72 + 36 = 180)?<BR>\n" );
document.write( "Is ( 5*36 = 180)?<BR>\n" );
document.write( "Is (180 = 180)? Yes<BR>\n" );
document.write( "Answer: The base angles are 72 degrees.<BR>\n" );
document.write( "PS You don't need the length of the sides.\r<BR>\n" );
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