Reflect ΔECD over segment AC. This establishes that ________. Then, translate point E' to point A. This establishes that ________. Therefore, ΔACB ~ ΔECD by the AA similarity postulate. A.∠ABC ≅ ∠E'D'C'; ∠E'D'C' ≅ ∠ABC B.∠ACB ≅ ∠E'C'D'; ∠D'E'C' ≅ ∠BAC C.∠ACB ≅ ∠E'C'D'; ∠E'D'C' ≅ ∠ABC D.∠ABC ≅ ∠E'D'C'; ∠D'E'C' ≅ ∠BAC
