SOLUTION: Find the measure of each angle and isosceles triangle if the measure of each of the base angle is 9� less than four times the measure of the vertex angle.

Question 1004851: Find the measure of each angle and isosceles triangle if the measure of each of the base angle is 9� less than four times the measure of the vertex angle.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

An isosceles triangle is a triangle with (at least) two equal sides.
in your case, base angles are same
let's the base angles be and , and the angle
if the measure of each of the base angle is � less than times the measure of the angle, we have

since we have

now find and

and
so, your angles are:,, and

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