Points, lines and planes

Any 2 points on the line, or a lowercase script letter.

ray

flat surface.

Line BC.

Any 3 non-collinear points on the plane or an uppercase script letter.

A location in space with no size or dimension.

A part of a line that has two endpoints.

Lines in a plane that never meet and are always the same distance apart.

A ray has one endpoint and extends infinitely in one direction, while a line segment has two endpoints.

Points that lie on the same straight line.