Chelsea drew two parallel lines kl and mn intersected by a transversal pq, as shown below: two parallel lines kl and mn with pq as a transversal intersecting kl at point r and mn at point s. angle krp is shown congruent to angle msp. which theorem could chelsea use to show the measure of angle krp is equal to the measure of angle qrl? alternate exterior angles theorem alternate interior angles theorem same-side interior angles theorem vertical angles theorem