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翰林數學_2下_CH4-1_平行線的特性與定義
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翰林數學
GeoGebra
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三角函数 的副本
直線的斜率：水平變化 & 鉛垂變化
折扣
比較五件物件的重量
撒针估算面积实验
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ActIVIDAD 2.2
現學現賣test
數理資優班 寒假探索營 2017 1 24
劉徽的「割圓術」 的複本
圓的切線方程
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Circumcircle or Circumscribed Circle
Parallelogram
Constructions
Vectors 2D (Two-Dimensional)
Linear Equations