Question

In an isosceles triangle. If the vertical angle is sum of the two base angles then vertical angle will be____________degree_. *​

Answer 1

Answer:

please mark as brilliant please

Answer 2

Answer:

it will be 120°

Step-by-step explanation:

let angle B and C be x

then Angle A = 2 ( x + x )

A = 2 (2x)

A = 4x

Now

angle A + B + C = 180°

A + x + x = 180°

A + 2x = 180°

A + 2x = 180 °

4x + 2x = 180 °

6x = 180°

x = 180° / 6

so , x = 30°

Therefore, Angle B and C will be 30°

and Angle A = 120°