SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Define the given theorems
HL theorem:
LL THEOREM:
AA THEOREM
HA THEOREM
STEP 2: choose the answer
Since it can be seen from the given question image that two legs of the given triangles congruent to one another, this implies that it follows the Leg-Leg Congruence theorem.
Hence, the answer is LL
