圆锥曲线顶点与焦点的尺规作图

Sector Constructing for Apex and Focus of Conical Section

本文在已知确定圆锥曲线的基础上,通过确定圆锥曲线的中心和顶点,给出了圆锥曲线焦点的尺规作图方法．

On the basis of the known conical section, the essay discusses the methods of sector constructing for apex and focus of conical section by deciding the center of conical section.