Answer: ∠A = ∠FEC
∠B = ∠EFC
∠BDA = ∠FCE
AB = EF
BD = FC
AD = EC
Step-by-step explanation:
We know that if two triangles are congruent then their corresponding parts are congruent.
This property is also known as CPCTC.
Given △ABD ≅ △EFC
Then ∠A = ∠FEC [corresponding angles of congruent triangles]
∠B = ∠EFC [corresponding angles of congruent triangles]
∠BDA = ∠FCE [corresponding angles of congruent triangles]
AB = EF [corresponding sides of congruent triangles]
BD = FC [corresponding sides of congruent triangles]
AD = EC [corresponding sides of congruent triangles]