Question

if an orthocenter lies inside of a triangle, then the triangle must be isosceles. obtuse. right. acute.

Explanation:

The orthocenter is the point of intersection of the altitudes of a triangle. In an acute - angled triangle, all three altitudes intersect inside the triangle. In an obtuse - angled triangle, the orthocenter lies outside the triangle. In a right - angled triangle, the orthocenter is at the vertex of the right angle. The type of triangle (isosceles) is not related to the position of the orthocenter in terms of it being inside or outside.

Answer:

D. acute