论射影几何对中学解析几何教学的指导意义

On Influence Projective Geometry to Elementary Geometry in Teaching and Learning

利用圆锥曲线的射影、仿射和度量性质的区分和三者之间的关系。

Projective property,affine property and metric property of circular curve and their relations are used in this paper.The influence projective geometry to elementary geometry is discussed.