Pre-Cal Help?

Question

Points are A (0,0) B (18,0) C (6,12)
Intersection of point of medians:
This point is called the ___________of the triangle.
Intersection point of the altitudes:
This is called the______________of the triangle.
Intersection point of prependicular bisectors:
This is called the ___________of the triangle.
DO not understand the questions.

Answer 1

The intersection of the medians of a triangle is called the centroid.

The intersection of the altitudes of a triangle is called the orthocenter.

The intersection of the perpendicular bisectors of a triangle is called the circumcenter.