Question: What is the measure of the corresponding angle when a transversal intersects two parallel lines?

Options:

1. Always 90 degrees.
2. Always equal to the alternate interior angle.
3. Always equal to the same side interior angle.
4. Always supplementary to the same side exterior angle.

Correct Answer: Always equal to the alternate interior angle.

Solution:

Corresponding angles are equal when a transversal intersects two parallel lines.