Question

The measure of the vertex angle of an isosceles triangle is one-fourth

that of a base angle.
(I also need the equation)

measure of each base angle =

measure of vertex angle =

Answer 1

measure of each base angle = 80 each angle

measure of vertex angle = 20

Explanation:

x=base angle

2x+ x/4= 180

Multiply everything by 4 to eliminate the fraction

8x+x = 720

9x=720

x=80

80/4=12