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points of concurrency
the point of concurrency of the medians of a triangle
the point of concurrency of the perpendicular bisectors of a triangle
the point of concurrency of the angle bisectors of a triangle
the point of concurrency of the altitudes of a triangle
point of concurrency
the point that all lines have in common, intersection
median of a triangle
a seg drawn from any vertex to the midpoint of the opposite side
altitude of a triangle
a seg drawn from any vertex perpendicular to the opposite side