The congruence theorem that can be used to prove △BDA ≅ △BDC is SSS (Side Side Side); option D.
What is congruency in triangles?
Congruency of triangles refers to the similarity that exists between triangles such that the triangles have equal equal angles and equal length of sides.
The given Triangles B D A and B D C share side B D.
Sides B C and B A are congruent.
Sides A D and D C are congruent.
Therefore, the congruence theorem that can be used to prove △BDA ≅ △BDC is SSS (Side Side Side).
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