Question

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

Explanation:

When a transversal intersects two parallel lines, alternate - interior angles are always congruent by the alternate - interior angles theorem. Consecutive interior angles are supplementary, adjacent angles are not always congruent, and supplementary angles are not always congruent to each other in this context.

Answer:

A. Alternate interior angles