Question

1. which angles are always congruent when formed by a transversal intersecting two parallel lines? a. consecutive interior angles b. adjacent angles c. alternate interior angles d. supplementary angles

Explanation:

When a transversal intersects two parallel lines, alternate - interior angles are congruent. Consecutive interior angles are supplementary, adjacent angles formed by a transversal and parallel lines are not always congruent, and supplementary angles are two angles that add up to 180 degrees and not always congruent in the context of parallel lines and a transversal.

Answer:

c. Alternate interior angles