Question

In the given figure the value of x is...?

Answer 1

Answer:

as the triangle is isosceles (angles opposite to equal sides of an isosceles triangle are equal)

70+x+x=180° (angle sum property of triangle)

70+2x=180

2x=180-70

2x=110

x=110/2

x=55°

Answer 2

Answer:

It is an isosceles triangle

so angle B = angle C

given that angle angle B = x

By using Angle sum property of triangle

Angle A + Angle B + Angle C = 180

70+ x + x =180

2x = 180-70

2x = 110

x = 55