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Explanation:
1. ∠ABC ≅ ∠DEF ≅ 90° . . . . given
2. BC ≅ FE, BC║FE . . . . given
3. ∠BCF ≅ ∠EFC . . . . alternate interior angles
4. ΔABC ≅ ΔDEF . . . . ASA
5. CA ≅ FD . . . . CPCTC
6. FC ≅ CF . . . . reflexive property of congruence
7. CA -CF ≅ FD -FC . . . . addition property of equality
8. FA ≅ CD . . . . segment sum theorem
