Complete the reasons for the proof. Given: m ∠ 3 = m ∠ 4 Prove: ∠ 1, ∠ 2 are supplementary STATEMENT REASON 1. m ∠ 3 = m ∠ 4 1. 2. ∠ 2, ∠ 3 are supplementary 2.sides in rays 3. m ∠ 2 + m ∠ 3 = 180º 3. Definition of angles 4. m ∠ 2 + m ∠ 4 = 180º 4. Substitution 5. m ∠ 1 = m ∠ 4 5. Opposite are 6. m ∠ 2 + m ∠ 1 = 180º 6. 7. ∠ 1, ∠ 2 are supplementary 7. Definition of angles
