Given: ∠1 and ∠2 are vertical angles and ∠2 and ∠3 are supplementary Prove: ∠1 and ∠3 are supplementary

Use the reasons to complete the proof.
Definition of Property of EqualityDefinition of SupplementaryVertical Angles Theorem
Statements Reasons
∠1 ≅ ∠2
m∠1 = m∠2
m∠2 + m∠3 = 180
m∠1 + m∠3 = 180
∠1 and ∠3 are supplementary angles.

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