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Question
In ΔABC and ΔDEF, AB = DE and BC = EF, then one can infer that ΔABC ≅ ΔDEF, when
Options:
A .  ∠BAC = ∠EFD
B .  ∠ACB = ∠EDF
C .  ∠ABC = 2∠DEF
D .  ∠ABC = ∠DEF
Answer: Option D
According to question,
∠ABC = ∠DEF
Note : Two triangles are congruent if two sides and the included angle of one triangle are equal to the corresponding sides and the included angles of the other triangle (SAS criterion).

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