Match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m? 3 = m? 1 given 2. m? 1 = m? 2 if alternate interior angles are =, then lines are ||. 3. m? 2 = m? 3 if lines are ||, then corresponding angles are =. 4. l||m substitution