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橢圓的定義畫圖
Author:
SUN YUNG CHANG
GeoGebra
New Resources
近似值：有效數字
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
兩組對邊相等的四邊形
柱體建築師
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阿波羅尼斯問題：與三圓相切的圓
柱體和錐體
錐台
Copy of 七巧板
Distributive Law of Multiplication 1 (乘法的分配率 1)
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Inequalities
Plane Figures or Shapes
Kite
Natural Numbers
Normal Distribution