Select the correct answer. given: transversal t passes through parallel lines r and s. prove: statement reason 1. r || s given 2. for parallel lines cut by a transversal, corresponding angles are congruent. 3. what is the next step in the proof? choose the most logical approach. statement: and reason: congruent supplements theorem statement: and reason: linear pair theorem statement: and reason: definition of supplementary angles statement: and reason: vertical angles theorem