摘要
针对二次锥面的最简形式方程ax2+by2+cz2=0,讨论二次锥面的平面截线的一些性质,给出了二次锥面上二直线夹角求法和其上二直线相互垂直的判定条件,同时,用实例说明这些结论的应用。
Aiming at the simplest equation ax2+by2+cz2=0,some properties of the section curves for a cone of the second order were discussed,giving the method to calculate the intersectant angle and the perpendicular condition for two straight lines on the cone of the second order.And examples were used to explain their application of the conclusion.
出处
《成都纺织高等专科学校学报》
CAS
2007年第2期33-35,55,共4页
Journal of Chengdu Textile College
关键词
二次锥面
平面截线
切平面
直母线夹角
垂直条件
cone of the second order,the section curve,tangent plane,intersentant angle for two straight lines,perpendicular condition
