Answer:
YXZ and NMO
Explanation:
The HL (hypotenuse leg) theorem says that if the hypotenuse and one leg of one right triangle is congruent to the hypotenuse and one leg of another right triangle, the 2 triangles are congruent.
Therefore, we can see that the only 2 triangles that can be guaranteed to be congruent are triangles YXZ and NMO.