In ∆ABC and ∆DEF, it is given that AB=DE and BC=EF. In order that ∆ABC≅∆DEF, we must have
From the question, we have:
In ∆ABC and ∆DEF
AB = DE (Given)
BC = EF (Given)
So, in order to have ∆ABC ≅ ∆DEF
∠B must be equal to ∠E
∴ Option (B) is correct