摘要
在射影几何的范畴内,全面地论述了两二次曲线的公有点和公切线的图解问题。不仅给出了两次曲线各种交切情况下,已知一定条件的图解方法,提供了解决该类问题的射影作图,并且从几何角度划清了能否图解的界线,解决了该类问题的图解可能性问题。
This paper deals with the graphics of the intersections and common tangents of two conics according to projective geometry .Not only are their graphics given of two conics in various relative positions, but also the possibility of solving graphically such problems is explored.
出处
《天津大学学报》
EI
CAS
CSCD
1990年第4期115-120,共6页
Journal of Tianjin University(Science and Technology)
关键词
图解
二次曲线
公有点
公切线
graphics, conics, intersection, common tangent
