Question

If the following pair of the triangle is congruent? state the condition of congruency : 
In Δ ABC and Δ DEF, AB = DE, BC = EF and ∠ B = ∠ E.

Answer 1

In Δ ABC and Δ DEF,
AB = DE         ...[ Given ]
∠B = ∠E       ...[ Given ]
BC = EF          ...[ Given ]

By Side - Angle - Side criterion of congruency, the triangles
Δ ABC and Δ DEF  are congruent to each other.
∴ Δ ABC ≅ Δ DEF