Question

What is the missing statement in the proof?

Answer 1

it's B! because it's what was already given to you next to the picture, and it just wanted you to rewrite it into the proof

Answer 2

B: ∠1 ≅ ∠2

Explanation:

Transitive property of congruence says that

If a=b and a=c then b=c

From the given we can see that ∠1 ≅ ∠2

Vertical angles are congruent. so ∠1 ≅ ∠3

By Transitive property of congruence

If ∠1 ≅ ∠2 and ∠1 ≅ ∠3 then ∠3 ≅ ∠2

The missing statement in the proof is the statement already given for the diagram that is

∠1 ≅ ∠2