Question

B) give reasons for your answer

Answer 1

80° is the correct answer

Explanation:

The angle B is 100° because of the property of the vertically opposite angle.

As we know the property consecutive interior angle that the sum of two angle is 180°

So

Angle B + Angle X =180°

100 °+ Angle X =180°

Angle X=180°-100°

Angle X = 80°