圆锥曲线：圆锥截痕的三维演示
2020-03-30 08:41
本GeoGebra范例通过三维模型，动态演示平面截取圆锥所得的圆锥截痕。用户可操作截面与圆锥的相对位置及角度，直观观察截面图形如何从圆、椭圆过渡到抛物线和双曲线。该模型结合正交线与交线等几何构造，帮助学习者深入理解圆锥曲线的几何定义与空间形成过程，是立体几何与解析几何结合的经典教学工具。
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