Final answer:
Using the properties of parallel lines and angles, we can prove that ∠gji ≅∠lkf.
Step-by-step explanation:
Given that ef∣gh and ab∣cd, we can use the properties of parallel lines and transversals to prove that ∠gji ≅∠lkf.
- Since ef∣gh, the alternate interior angles ∠gji and ∠ghf are congruent.
- Similarly, since ab∣cd, the alternate interior angles ∠lkf and ∠lke are congruent.
- Using the transitive property of congruence, we can conclude that ∠gji ≅∠ghf ≅∠lkf.