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peacock
Author:
李春培
peacock
GeoGebra
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兩位數加法
畫出對稱圖形
找出對稱軸
柱體建築師
sanjiaohanshu
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優良作品1(孟倫)
生活中的平面圖形關係─垂直
circle
三角形ㄛ
翰林數學_2下_CH3-2_AAS全等性質
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Sphere
Means
Planes
Ratios
Rational Numbers