Final answer:
The missing statements in steps 3 and 4 are ∠A ≅ ∠Z and ∠BAC ≅ ∠YXZ.
Step-by-step explanation:
The missing statements in steps 3 and 4 are:
- ∠A ≅ ∠Z
- ∠BAC ≅ ∠YXZ
These statements are missing in steps 3 and 4 of the proof because they are not necessary for the conclusion to be valid. The SAS (Side-Angle-Side) similarity theorem states that if two triangles have two pairs of corresponding sides that are proportional and the included angles are congruent, then the triangles are similar.
Steps 1 and 2 of the proof show that ∠X ≅ ∠C and ∠B ≅ ∠Y, which satisfies the angle congruence condition of the SAS theorem. Therefore, these missing statements are not needed to prove the similarity of the triangles.