What is the missing step in this proof? A. ∠CAB ≅ ∠ACB, ∠EDB ≅ ∠DEB
B. ∠ADE ≅ ∠DBE, ∠CED ≅ ∠EBD
C. ∠CAD ≅ ∠ACE, ∠ADE ≅ ∠CED
D. ∠CAB ≅ ∠EDB, ∠ACB ≅ ∠DEB

Given: ΔABC with
Prove:

Statement Reason
1. given
2. If two parallel lines are cut by a transversal, the corresponding angles are congruent.
3. ΔABC ~ ΔDBE AA criterion for similarity
4. Corresponding sides of similar triangles are proportional.
5. AB = AD + DB
CB = CE + EB segment addition
6. Substitution Property of Equality
7. division
8. Subtraction Property of Equality