Question

please answer my question

Answer 1

The correct option is (a)BC=EF

This property for congruence of triangle is known as ASA.

Cheers!

Answer 2

Answer:

In ▲ ABC and ▲ DEF it is given that ∠B = ∠E and ∠C = ∠F in order that ▲ ABC ≅ ▲ DEF we must have ∠A = ∠D