Question

In the diagram, the horizontal lines are parallel. Find the value of x.

A. x=7 x = 7 x = 7

B. x=8 x = 8 x = 8

C. x=-5 x = − 5 x = − 5

D. x=15.5 x

Answer 1

x = 8°

Explanation:

When two parallel lines are crossed by a transversal, then alternate angles are equal.

8x-4 and 60° are alternate angles, so

8x-4 = 60° ===> 8x = 60+4 ===> 8x = 64 ===> x = 64/8 ===> x = 8°