What theorem was used to identify that the opposite sides are parallel?(1 point)

Question

Responses

If the same side interior angles are supplementary, then the lines are parallel
If the same side interior angles are supplementary, then the lines are parallel

If the alternate exterior angles are congruent, then the lines are parallel
If the alternate exterior angles are congruent, then the lines are parallel

If the alternate interior angles are congruent, then the lines are parallel
If the alternate interior angles are congruent, then the lines are parallel

If the corresponding angles are congruent, then the lines are parallel

Answer 1

The theorem used to identify that the opposite sides are parallel is:

If the corresponding angles are congruent, then the lines are parallel.

This theorem is one of the criteria for establishing that two lines are parallel when a transversal cuts through them.