If an orthocenter lies inside of a triangle, then the triangle must be

isosceles.
obtuse.
right.
acute.

The correct choice is D, acute.

Step-by-step explanation:

An orthocenter is the intersection of all the altitudes from each side of a triangle. If an orthocenter lies inside of a triangle, then the triangle is ACUTE. If the orthocenter lies outside of a triangle, then the triangle is OBTUSE.

hope this helps :)

D. Acute.

Step-by-step explanation:

We are asked to find the type of triangle, if an ortho-center lies inside of a triangle.

We know that ortho-center of a triangle is the point, where all the three altitudes of a triangle intersect.

Since we have been given that the ortho-center lies inside the triangle, so the altitudes will intersect inside the triangle. Therefore, the triangle must be an acute triangle and option D is the correct choice.

step-by-step explanation:

25.2

step-by-step explanation:

2+4x6-8/10= 25.2