SOLUTION: The measure of the vertex angle in an isosceles triangle is six less than four times the measure of the base angle. Find the measure of the vertex angle.

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Question 1106391: The measure of the vertex angle in an isosceles triangle is six less than four times the measure of the base angle. Find the measure of the vertex angle.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
v, vertex angle
b, each base angle
v=-6%2B4b


v%2Bb%2Bb=180
v%2B2b=180
2b%2B4b-6=180
6b=180%2B6
b=186%2F6
b=31

v=4%2A31-6
highlight%28v=118%29