完全四线形 Complete quadrangle



![Chacune des trois diagonales [BD], [EF] et [AC] est divisée harmoniquement par les deux autres.](/Images/godic/202501/05/QuadrilatèreComplet.svg2706.png")
在数学,尤其是射影几何学里,完全四线形是指欧几里德平面上由四条两两相交但是任意三条不共点的直线加上它们的六个交点组成的图形。相应地,由四个三三不共线的点加上它们之间的六条连线所构成的图形则称为完全四点形。
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词汇 | Complete quadrilateral |
分类 | 英语词汇 英语翻译词典 |
释义 |
Complete quadrilateral
中文百科
完全四线形 Complete quadrangle(重定向自Complete quadrilateral)
![]() ![]() ![]() ![]() 在数学,尤其是射影几何学里,完全四线形是指欧几里德平面上由四条两两相交但是任意三条不共点的直线加上它们的六个交点组成的图形。相应地,由四个三三不共线的点加上它们之间的六条连线所构成的图形则称为完全四点形。
英语百科
Complete quadrangle 完全四线形(重定向自Complete quadrilateral)
![]() ![]() ![]() ![]() In mathematics, specifically projective geometry, a complete quadrangle is a system of geometric objects consisting of any four points in a plane, no three of which are on a common line, and of the six lines connecting each pair of points. Dually, a complete quadrilateral is a system of four lines, no three of which pass through the same point, and the six points of intersection of these lines. The complete quadrangle was called a tetrastigm by Lachlan (1893), and the complete quadrilateral was called a tetragram; those terms are occasionally still used. |
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