A pair of parallel lines is cut by a transversal:

A pair of parallel lines cut by a transversal is shown. The inside bottom right angle is labeled 80 degrees. The alternate interior angle is cut by a ray and is labeled as x on one side and 15 degrees on the other.
What is the measure of angle x? (4 points)

60 degrees

65 degrees

70 degrees

80 degrees

The alternate interior angles are congruent, so angle x is also 15 degrees.