包络椭圆
2016-06-05 05:55
本GeoGebra范例演示了包络椭圆的几何构造过程。通过运用圆、点、线段及垂直平分线等基本几何作图命令，结合焦点与动点的几何关系，动态生成椭圆的包络线。该范例直观展示了椭圆的定义及其包络性质，适用于解析几何与几何作图的教学与探索，帮助学习者深入理解圆锥曲线的几何特征。
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