Terms for subject Mathematics containing midpoint of

English	Russian
A median of a triangle is a segment from a vertex to the midpoint of the opposite side of the vertex	медиана треугольника
a perpendicular bisector of a segment is a line, ray or another segment that is perpendicular to the segment at its midpoint	срединный перпендикуляр
midpoint of a segment	середина отрезка
midpoint middle point of a the triangle side	середина стороны треугольника
midpoint of line segment	средняя точка отрезка прямой
midpoint of simplex	средняя точка симплекса
the line joining midpoints of two sides of a triangle	средняя линия
the midpoints on the sides of the triangle are labeled	помеченный (labelled)