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peacock
Author:
李春培
peacock
GeoGebra
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平行線的斜率
祖冲之的期望：内棋与外棋
折扣
双心四边形
比較五件物件的重量
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EnergyMath 2-3 棣美弗定理
Catenoid
動態文字2次函數
探究判定全等三角形的条件（ASA）
物理
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Real Numbers
Median Value
Straight Lines
Constructions
Rotation