Question

1. which angles are congruent when two parallel lines are intersected by a transversal? a. supplementary angles b. same - side interior angles c. consecutive interior angles d. alternate interior angles

Explanation:

When two parallel lines are intersected by a transversal, alternate - interior angles are congruent. Supplementary angles add up to 180 degrees. Same - side interior angles and consecutive interior angles are supplementary (add to 180 degrees), not congruent.

Answer:

d. Alternate interior angles