Terms containing midpoint of a segment

Subject	English	Russian
math.	A median of a triangle is a segment from a vertex to the midpoint of the opposite side of the vertex	медиана треугольника
math.	a perpendicular bisector of a segment is a line, ray or another segment that is perpendicular to the segment at its midpoint	срединный перпендикуляр
tech.	coordinates of the midpoint of a segment	координаты центра сегмента (Morning93)
math.	midpoint of a segment	середина отрезка