我们知道,复制、剪切、粘贴和插入是对电子文档编辑处理的最基本的手段,方便快捷!受到文档编辑方法的启示,在对椭圆综合问题的教学中,笔者想到,在圆锥曲线综合问题中,无非有那么几个基本的量,如直线的斜率(倾斜角)、截距,椭圆中的长半轴长a、短半轴长b、半焦距c、离心率e,这些元素是问题的基本量,直线与圆锥曲线相交后,可以构造弦长、三角形面积、三角形外接圆或内切圆(半径等)、向量共线表示、向量夹角、向量数 We know that copying, cutting, pasting and inserting are the most basic means of electronic document editing and processing. It is convenient and quick! Inspired by the method of document editing, in the teaching of the problem of ellipse synthesis, I think that in the conic synthesis problem , Such as the slope (tilt angle), intercept, the length of the semi-major axis a in the ellipse, the length of the semi-major axis b, the half focal length c, and the eccentricity e, all of which are problems , The intersection of straight line and conic curve can be constructed chord length, triangle area, triangle circumcircle or inscribed circle (radius, etc.), collinear vector, vector angle, the number of vectors