Option-B is correct, that is ∠DFE ≅ ∠ DFG from the side and SAS congruency that we obtained must have two sides and one angle.
Given that,
We have to prove ΔDEF ≅ ΔDGF by SAS.
We know that,
Triangle is congruent by SAS
Step1: GF side = EF side ( we can say from the picture)
Step2: DF side =FD side ( we can say from picture that the sides are common)
Step3:
The side and SAS congruency that we obtained must have two sides and one angle.
This implies that there must be a gap between the two sides.
So,
∠DFE ≅ ∠ DFG
Therefore, Option-B is correct, that is ∠DFE ≅ ∠ DFG from the side and SAS congruency that we obtained must have two sides and one angle.
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