document.write( "Question 764258: How do you solve this?
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document.write( "In an isosceles triangle, each base angle has a measure which is 30 more than four times the measure of the vertex angle. Find the measure of a base angle.
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Algebra.Com's Answer #465313 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Vertex angle = x \n" ); document.write( "Base angle = 30 + 4x \n" ); document.write( "Total of 180 degrees in a triangle. \n" ); document.write( "2(30 + 4x) + x = 180 \n" ); document.write( " 60 + 8x + x = 180 \n" ); document.write( " 60 + 9x = 180 \n" ); document.write( " 9x = 180 - 60 \n" ); document.write( " 9x = 120 \n" ); document.write( " x = 120/9 \n" ); document.write( " x = 13.3 degrees \n" ); document.write( "Base angle = 83.3 degrees. \n" ); document.write( "Hope this helps. \n" ); document.write( ":-) \n" ); document.write( " |