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Author:
Alex Leong
GeoGebra
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兩位數加法
兩組對邊相等的四邊形
三位數除以一位數（一）
畫出對稱圖形
找出對稱軸
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waaachen0001
試試看吧!
螺線相似正N邊形
兩圓滾動軌跡
勾股定理的直观证明（义务教育数学 新课标-例82）
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Exponential Functions
Difference and Slope
Reflection
Cube
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