抛物线的几何定义：到定点与定直线等距的轨迹
2015-07-26 10:44
本GeoGebra范例动态演示了抛物线的几何定义，即平面上到一个定点（焦点）和一条定直线（准线）距离相等的点的轨迹。通过线段、垂直平分线、垂线和交点等几何作图命令，构造了抛物线上的动点及其与焦点和准线的距离关系。该模型直观展示了圆锥曲线的核心性质，适合用于解析几何与轨迹方程的教学与探索。
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