31. Exemplar example problems II

1. In the two triangles $ABC$ and $DEF$, $AB = DE$ and $AC = EF$. Name two angles from the two triangles that must be equal so that the two triangles are congruent. Give reason for your answer.

 

2. In triangles $ABC$ and $DEF$, $\angle A = \angle D$, $\angle B = \angle E$ and $AB = EF$. Will the two triangles be congruent? Give reasons for your answer.