document.write( "Question 1200907: 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. \n" ); document.write( "

Algebra.Com's Answer #835140 by josgarithmetic(39618) $\"\"$ $\"About$

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Either base angle, b
\n" ); document.write( "The vertex angle, 180-2b\r
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\n" ); document.write( "\n" ); document.write( "Vertex angle is 10 degrees less than either base angle:
\n" ); document.write( " $\"180-2b=3b-10\"$
\n" ); document.write( "-
\n" ); document.write( " $\"190=5b\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"b=190%2F5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight_green%28b=38%29\"$ \r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Vertex angle's measure, $\"180-2%2A38\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28104%2Adegrees%29\"$ \n" ); document.write( "

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