一道几何命题射影解法的启示

The Implications of the Prospective Method of a Geometric Proposition

利用射影几何的极点与极线关系,给出一道几何命题的射影解法,揭示命题的内在联系,从中获得射影几何学习的两点启示:注重《高等几何》的学习研究及其作用的发挥.

This paper uses the relationship between pole and polar line of prospective geometry and a prospective method to solve a geometric proposition. It reveals the inner relation of propositions. Two implications are noticeable in this study： Higher Geometry shall be learned and researched; Higher Geometry＇s function shall be given full play.