Answer:
A) HL Theorem
Step-by-step explanation:
According to the Hypotenuse-Leg Triangle Congruence Theorem (HL), if the hypotenuse and one leg of one right triangle are congruent to the hypotenuse and corresponding leg of another right triangle, then the two triangles are congruent.
In the given diagram, the shortest leg and hypotenuse of one right triangle is congruent to the shortest leg and hypotenuse of the other right triangle (as indicated by the same number of tick marks on each corresponding line segment).
Therefore, the theorem we can use to prove the triangles are congruent is the HL theorem.
