Equal sides are the paragraph's omission.
Common Side BA is the Missing Piece of the Proof.
The reasons given in the evidence are sufficient to demonstrate that BCA and BFA are similar.
ΔBFA≅ ΔBCA, but not sufficiently to demonstrate that BCA is compatible with BFA.
To demonstrate congruent triangles, we must demonstrate that the corresponding sides are likewise equal, so we must demonstrate that BA = BA (common side) before the Proof is complete.
Hence, Equal sides are the paragraph's omission.
To learn more about congruent triangles refer to:
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