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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,
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* either infinite or finite, such as the Fano plane, or others;
*geometry of an affine plane,
*geometry of a Non-Euclidean plane,
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* either the hyperbolic plane,
*
* or the elliptic plane,
*
*
* or the geometry of the related two-dimensional spherical geometry.
See also: plane curve.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Plane geometry (disambiguation)」の詳細全文を読む
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