SOLUTION: the vertex angle of an isosceles triangle is four less than twice the base angle. what is the measure of the vertex angle?

Algebra ->  Triangles -> SOLUTION: the vertex angle of an isosceles triangle is four less than twice the base angle. what is the measure of the vertex angle?      Log On


   

Question 638452: the vertex angle of an isosceles triangle is four less than twice the base angle. what is the measure of the vertex angle?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
the vertex angle of an isosceles triangle is four less than twice the base angle. what is the measure of the vertex angle?
**
let x=base angle
2x-4=vertex angle
sum of angles in a triangle=180º
2x+2x-4=180
4x=184
x=46
2x-4=92-4=88
vertex angle=88º