Match the reasons with the statements in the proof if the last line of the proof is: 6. ∠3 and ∠5 are supplementary because of the definition of supplementary. Given: s | | t Prove: 3, 5 are supplementary 1. s||t Given 2. ∠1 and ∠3 are supplementary Substitution 3. m∠1 + m∠3 = 180° If lines are ||, corresponding angles are equal 4. m∠1 = m∠5 Definition of supplementary 5. m∠5 + m∠3 = 180° Exterior sides in opposite rays