An exact location in space.

A flat surface that extends forever in all directions.

A straight path of points that goes on forever in only one direction.

Line segments with the same lengh.

Part of a line with two endpoints.

Intersecting lines that form right angles.

The point halfway between the endpoints of a line segment.

Lines that are in the same plane but do not intersect.

Part of a line with one endpoint, extending forever in only one direction.

Lines that lie in different planes. They do not intersect and are not parallel.