13. Given: BC = DC, AC = ECProve: ABC = EDC

Statement: BC ≅ DC
Reason: Given
Statement: AC ≅ EC
Reason: Given
Statement: ∠ACB≅∠ECD
Reason: Vertically Opposite Angles
Statement: Triangle ABC ≅ Triangle EDC
Reason: Side-Angle-Side (SAS) Congruency Theorem