本源程序是用几何画板做的数学课件，文件为圆锥曲线共性，供高中数学教师使用。本课件参加自治区课件大赛获一等奖。-source is the Geometer's Sketchpad to do mathematics courseware, documents for the conic common for high school math teachers to use. The courseware participation in the autonomous courseware