相交弦定理演示
2013-03-21 03:45
本 GeoGebra 范例演示了圆内的相交弦定理。通过构造圆及其内部相交的两条弦，展示交点将两条弦分成的线段长度乘积相等的几何性质。该动态模型允许用户拖动弦的端点或交点，实时观察并验证线段比例与乘积的恒定关系，是学习平面几何中圆的性质及线段比例关系的直观教学工具。
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