圆锥曲线特征点指的是焦点、顶点以及准线与轴的交点 .特征线指的是过焦点、顶点且与轴垂直的直线和准线 .经研究 ,它们有如下一组新颖有趣的性质 .定理 1　 l是经过椭圆 b2 x2 + a2 y2 =a2 b2 ( a b 0 )长轴顶点 A且与长轴垂直的直线 ,E、F是椭圆两个焦点 ,e是离心率 ,点 P The characteristic points of the conic section refer to the points of intersection of the focal point, the vertex, and the quasi-line. The characteristic lines refer to the lines and the quasi-line which are over-focus, vertices, and perpendicular to the axis. After study, they have the following set of novel and interesting properties. Theorem 1 l is a straight line passing through the long axis A of the ellipse b2 x2 + a2 y2 =a2 b2 (ab 0 ) and perpendicular to the long axis. E and F are two ellipses, e is the eccentricity, point P.