Question

100 POINTS NEED HELP.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 20 degrees on the other.

What is the measure of angle x?

1. 60 degrees
2. 70 degrees
3. 80 degrees
4. 100 degrees

Answer 1

Alternate interior angles are equal, thus the given alternate interior angle is 80 degrees. So its x = 80 - 20 = 60 degrees.

Answer 2

Alternate interior angles are equal, thus the given alternate interior angle is 80 degrees.

Therefore, x = 80 - 20 = 60 degrees.