HL Triangle Congruence Theorem: If the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the triangles are congruent.

Diagram illustrating the HL Triangle Congruence Theorem, showing two right triangles ABC and EGF with congruent hypotenuses AC and EF, and congruent legs BC and GF, indicating triangle congruence.