Question

If the base angle of an isosceles triangle is 40 degree then what will be the measure of the vertex angle.​

Answer 1

Answer:

Tha answer will be 100

Step-by-step explanation:

Isosceles means two angles will be a same then 40 degree is a then b also 40 degree

A+b+c =180

A=40

B=40

C=?

So 40+40+c=180

80+c=180

C=180-80=100

C=100