Question: What is the measure of angle 3 if angle 1 is 45 degrees and angle 3 is an alternate exterior angle to angle 1?

Options:

1. 45 degrees
2. 135 degrees
3. 90 degrees
4. 180 degrees

Correct Answer: 45 degrees

Solution:

Alternate exterior angles are equal, so angle 3 is also 45 degrees.