Complete the proof.
Given: ∠DCE≅∠CDE≅∠DEC; ∠CDB≅∠CBD
Prove: BC≅DE
a. DE≅EC≅CD because ___?
b. BC≅DC because ___?
c. ∴ BC≅DE because ___?
Given: ∠DCE≅∠CDE≅∠DEC; ∠CDB≅∠CBD
Prove: BC≅DE
a. DE≅EC≅CD because ___?
b. BC≅DC because ___?
c. ∴ BC≅DE because ___?
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