Step-by-step explanation:
The way you have marked the diagram, it is convenient to use the AAS congruence postulate.
Statement . . . . Reason
1. AB║DE, DC=CB . . . . given
2. ∠1≅∠2 . . . . vertical angles are congruent
3. ∠CAB≅∠CED . . . . alternate interior angles theorem
4. ΔACB ≅ ΔECD . . . . AAS congruence postulate
5. AC≅CE, AB≅DE . . . . CPCTC