Answer:
B. TM ≅ OR
Explanation:
To prove that two right triangles are congruent using the HL Congruence Theorem, we need to show that both have equal hypotenuse length and that one of the two other leg of one triangle is congruent to the corresponding leg of the other triangle.
Thus, we already know that the hypotenuse of both triangles are congruent, TO = TO, therefore, the additional information we need would be TM ≅ OR