In the figure below, AB is parallel to CD.A. If two parallel lines are cut by a transversal, the alternate interior angles are congruent.B. If two parallel lines are cut by a transversal, the alternate exterior angles are congruent.C. If two parallel lines are cut by a transversal, the corresponding angles are congruent.D. If two parallel lines are cut by a transversal, the vertical angles are congruent.
