Respuesta :

the answer is 6 hope this answers your question

Answer with explanation:

It is given that,

 R ST  ≅ M NO.

Also, MN=6 unit

NO=7 Unit

MO=11 unit.

When two triangles are congruent , their corresponding Sides and Angles are Congruent, that is equal.

So,Corresponding Side to MN is RS .

So, MN=RS

MN=6 unit

RS=6 unit