Answer:

Explanation:
We know that if two triangles are congruent , then their corresponding sides and angles are congruent (by CPCTC).
[CPCTC is the acronym use for the property of congruent triangles that says that corresponding parts of two congruent triangles are congruent]
Given : ΔABC ≅ ΔMNO
Then ,
corresponds
[First letter]
corresponds
[Middle letter]
corresponds
[last letter]
Then , by CPCTC, we have

Hence, angle B is the corresponding angle which is congruent to angle N.