Answer:
The measure of angle N is equal to 
Step-by-step explanation:
we know that
The triangle LMO is an isosceles triangle
therefore

and

see the attached figure to better understand the problem
we have that

so

Remember that
-----> by supplementary angles
Find the measure of angle OMN


The sum of the internal angles of a triangle is equal to 
In the triangle OMN

we have


substitute and solve for m< NMO

