Which triangles in the diagram are congruent?

triangle 1 and triangle 2

triangle 1, triangle 2, and triangle 3

triangle 1 and triangle 3

triangle 1, triangle 3, and triangle 4

Which triangles in the diagram are congruent triangle 1 and triangle 2 triangle 1 triangle 2 and triangle 3 triangle 1 and triangle 3 triangle 1 triangle 3 and class=