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 Related Terms
 Perpendicular Bisector:  A perpendicular line or segment that passes through the midpoint of a segment.
Bisect: To cut in half exactly.
Median of a Triangle: A segment is a median of a triangle if and only if its endpoints are a vertex of the triangle and the midpoint of the side opposite the vertex.
Altitude of a Triangle: The perpendicular distance between a vertex of a triangle and the side opposite that vertex. Sometimes called the height of a triangle. Also, sometimes the line segment itself is referred to as the altitude.
Circumcenter: The point of intersection of the perpendicular bisectors of the sides of a given triangle; the center of the circle circumscribed about a given triangle.
Perpendicular Lines: Two lines are perpendicular if they intersect at a right angle.
Midpoint: The point on a line segment that divides it into two equal parts.
Segment Bisector: A point, segment, line, or plane that divides a line segment into two equal parts.