Plane geometry (disambiguation)

In mathematics, plane geometry may refer to:

• Euclidean plane geometry, the geometry of plane figures,
• geometry of a two-dimensional geometric object called a plane,

or, more specifically:

• geometry of a projective plane,
  • often the real projective plane,
  • but possibly the complex projective plane or projective plane defined over some other field,
  • either infinite or finite, such as the Fano plane, or others;
• geometry of an affine plane,
• geometry of a Non-Euclidean plane,
  • either the hyperbolic plane,
  • or the elliptic plane,
    • or the geometry of the related two-dimensional spherical geometry.

See also: plane curve.

This disambiguation page lists mathematics articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.