Question

Two parallel lines cut by a transversal are shown. What is the measure of X"?

Answer 1

9514 1404 393

Answer:

x = 10

Explanation:

The marked angles are "alternate interior" angles, so are congruent.

(x° +20°) = (4x° -10°)

30 = 3x . . . . . . . . . . . . . . . divide by °, add 10-x

10 = x . . . . . . divide by 3