Chord (geometry): Curve, Geometry, Line Segment

Diameter: Geometry, Circle, Line segment, Chord (geometry), Greek language, Radius, Convex set,...

Median (Geometry): Geometry, Triangle, Line segment, Vertex (geometry), Midpoint

Cevian: Geometry, Line Segment, Triangle, Vertex (geometry)

Cleaver (geometry): Geometry, Triangle, Line Segment, Bisect