摘要
利用射影对应变换方法研究二次曲线中割线线段度量关系,给出二次曲线中割线线段度量关系的推广结果,揭示"三割线定理"与"广义蝴蝶定理"的内在关系。
The measurement of the secant line of conics was researched by the projective transformation method. Then the extension of the measurement of the secant line of conics was provided. The research re- suits revealed the interrelation between the ＂three secant theorem＂ and the ＂generalized butterfly theo- rem＂.
出处
《甘肃科学学报》
2015年第1期41-45,共5页
Journal of Gansu Sciences
基金
陕西省特色专业建设项目(2011-59)
安康学院重学科建设项目(2013-4)
关键词
圆
二次曲线
三割线定理
蝴蝶定理
射影对应
Circle
Conic
Three secant theorem
Butterfly theorem
Projective correspondence
