椭圆轨迹：滑动杆上的定点轨迹
2011-06-17 02:24
本范例演示经典的椭圆生成机制（椭圆规原理）。固定长度的线段两端分别在x轴和y轴上滑动，线段上任意固定点扫过的轨迹即为椭圆。通过GeoGebra的轨迹命令，直观展示动点运动与椭圆几何性质的联系，是解析几何与轨迹问题的经典教学案例。
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