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A _ of a triangle is a segment that connects the midpoints of two sides of a triangle.
midsegment

The point of concurrency of the altitudes of a triangle.
orthocenter

When three or more lines intersect in the same point, they are called _ lines.
concurrent

A _ of a triangle is a segment whose endpoints are a vertex of the triangle and thye midpoint of the opposite side.
median

An _ of a triangle is a segment that goes from one vertex and is perpendicular to the opposite side.
altitude

An _ of the triangle is a segment that goes from a vertex and is perpendicular to the opposite side.
angle bisector

The point of concurrency of the perpendicular bisectors of a triangle is called the _.
circumcenter

The point of concurrency of the angle bisectors of a triangle is called the _.
incenter

The point of concurrency of the medians of a triangle.
centroid

A point on a perpendicular bisector of a segment is _ from the enpoints of the segment.
equidistant

A _ pf a triangle is a line (segment or ray) that is perpendicular to a side of the triangle at the midpoint of the side.
perpendicular bisector

