What´s measure of the $\angle MNQ$ in the figure below?

Question

For reference: Calculate the measure of the $\angle MNQ$

If: H ➔ Orthocenter

M ➔ Midpoint of AB

N ➔ Midpoint of BC

Q ➔ Midpoint of AH

Follow the drawing with the relationships I found

Aqua Solution Image:

Answer 1

Hint: Points $M,N,K,Q$ are concyclic. Why?

Nine point circle

So, we have: $$\angle MNQ = \angle MKQ = \angle MAK = 90^{\circ}- \angle B= 10^{\circ}$$