蝴蝶定理几何作图演示
2020-02-07 04:08
本范例演示了经典的蝴蝶定理（Butterfly Theorem）。通过GeoGebra构造圆、弦及其中点，展示过中点的任意两条弦与端点连线交于原弦上的两点，这两点到中点的距离相等。该作图涵盖了圆、线段、中点及交点等几何对象的构造，是平面几何中关于圆和弦性质的经典证明与可视化演示。
所属专题
鹿梅初中数学几何课件与模型合集
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移动D点或者F点，观察线段ON和OM的长度变化。

当r变化时，观察线段ON和OM的长度变化""/>
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