Question

below is a proof that corresponding angles are congruent: prove ∠1≅∠2. which of the following best completes the missing reason? step statement reason 1 m || n given 2 ∠1≅∠3 alternate interior angle theorem 3 ∠2≅∠3 4 ∠1≅∠2 transitive property show your work here. vertical angle theorem angle addition postulate linear pair property definition of angle bisector

Explanation:

Step1: Analyze angle - pair relationship

$\angle2$ and $\angle3$ are vertical angles.

Step2: Recall angle - related theorems

Vertical angles are congruent by the Vertical Angle Theorem.

Answer:

Vertical Angle Theorem