It is known that in the triangle ABC, BD and CE are the heights of the sides AC and ab respectively, and M is the midpoint of BC. If we connect de and take the midpoint o of De, what is the positional relationship between Mo and de

It is known that in the triangle ABC, BD and CE are the heights of the sides AC and ab respectively, and M is the midpoint of BC. If we connect de and take the midpoint o of De, what is the positional relationship between Mo and de

vertical