Question

the measure of the base angles of isoscless triangle is twice the measure of the vertical angle. find the measure of the vertical angle

Answer 1

Angle A=x (vertical angle)
then Base angle=angle B=angleC=2(LA)
B=C=2(A)=2x=2x=x
2x+2x+x=180
5x=180
x=180/5=36
Then vertical angle A=x=36