Angle-Adjacent Side-Opposite Side Congruence

Let $\Delta ABC$ and $\Delta DEF$ be two triangles.

And we also have $\angle A = \angle D$ , $AB = DE$ and $BC = EF$ .

In which case(s), we can say that $\Delta ABC \cong \Delta DEF$ ?

$P. \angle A$ is an acute angle.

$Q. \angle A$ is a right angle.

$R. \angle A$ is an obtuse angle.