Question

find the angle of x​

Answer 1

it's an iscoseles triangle so bottom 2 angles will be equal

so

2x+120=180(ASP)

2x=180-120

2x=60

x=30

Answer 2

Answer:

Given : A triangle with a angle of 120°and two sides of the triangle are equal.

Property: Angle opposite to equal sides are equal therefore the third angle will be x.

x + x + 120° = 180° (Angle sum property of triangle)

2x + 120° = 180°

2x = 180° -120°

2x = 60°

x = 30°.

b is the correct option.