In mathematics, plane geometry may refer to the geometry of a two-dimensional geometric object called a plane. Most times it refers to Euclidean plane geometry, the geometry of plane figures, More specifically it can refer to: * Euclidean plane geometry: * Cartesian geometry, the study of geometry using a coordinate system * Two-dimensional space * synthetic geometry, the study of geometry using a logical deduction and compass and straightedge constructions * 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. (en)
In mathematics, plane geometry may refer to the geometry of a two-dimensional geometric object called a plane. Most times it refers to Euclidean plane geometry, the geometry of plane figures, More specifically it can refer to: (en)