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Author:
艾文
GeoGebra
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撒针估算面积实验
平行線的判定
盈利與虧蝕
龙形曲线-分形龙
斐波那契螺旋弧线(表格法-可动态调节)
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二次函數及其圖像2
光的反射
尺規作圖
內心
公切線長度的計算的副本
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Geometry
Cube
Conic Sections
Tangent Function
Cylinder