Question

(HELP PLEASE!) Max drew two triangles; triangle ABC and triangle PQR, on a coordinate grid. The coordinates of the vertices of triangle PQR are P(-5, -5), Q(-5, -2), and R(-1, -2). The coordinates of the vertices of triangle ABC are A(2, 5), B(2, 2), C(6, 2).

Which postulate can be used to prove that the two triangles are congruent?