Desargues定理及其应用

Theorem of Desargues and Its Apply

Desargues定理是高等几何的重要定理,它同时也是从一维射影几何进入二维射影几何的一座重要桥梁 ;高等几何的许多定理都以它为依据,推出一系列射影几何命题。它也是平面(二维)射影几何的重要基础之一。Desargues定理蕴含丰富的数学思想方法,对具体问题的处理方法具有独特性,灵活性,同时对解决中学几何中的有关命题提供了一种新的模式及有关背景知识。

Desargues is an important theorem in Higher Geometry,a bridge from One-dimensional Pro-jective Geometry to Two-dimensional Projective Geometry.Based on it,amny theorems of Higher Projective Geometry have inferred a series of projective geometry propositions,Also it is one of the most important basos of Plane(two-dimension)Geometry.flecible in solving the specific problems as well as providing a newmodel and related background knowledge to the relevant propositions of the middle-school Geometry.