# Plane (geometry)/Related Articles

From Citizendium, the Citizens' Compendium

*See also changes related to Plane (geometry), or pages that link to Plane (geometry) or to this page or whose text contains "Plane (geometry)".*

## Parent topics

- Elementary geometry [r]:
*Add brief definition or description* - Euclidean geometry [r]: Form of geometry first codified by Euclid in his series of thirteen books,
*The Elements*.^{[e]}

## Subtopics

- Cartesian coordinates [r]: Set of real numbers specifying the position of a point in two- or three-dimensional space with respect to orthogonal axes.
^{[e]} - Polar coordinates [r]: Two numbers—a distance and an angle—that specify the position of a point on a plane.
^{[e]} - Plane figure [r]:
*Add brief definition or description* - Line (geometry) [r]: (or
**straight line**) In elementary geometry, a maximal infinite curve providing the shortest connection between any two of its points.^{[e]}