document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200907>Question 1200907</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The measure of the vertex angle of an isosceles triangle is 10 degrees less than thrice the measure of one of its base angles. Find the measure of the vertex angle. </SPAN>\n" );
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document.write( "let x be the measure of each base angle<BR>\n" );
document.write( "then the measure of the vertex angle is 3x-10<br><BR>\n" );
document.write( "The sum of the angle measures is 180:<br><BR>\n" );
document.write( "(x)+(x)+(3x-10)=180<BR>\n" );
document.write( "5x-10=180<BR>\n" );
document.write( "5x=190<BR>\n" );
document.write( "x=38<br><BR>\n" );
document.write( "ANSWER: The measure of the vertex angle is 3x-10 = 3(38)-10 = 104 degrees<br><BR>\n" );
document.write( " </SPAN>\n" );
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