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the definition of ellipse
Author:
丁明智
GeoGebra
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三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
判斷球體
畫出對稱圖形
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waaachen
立體圖形的旋轉對稱
梯形(面積)
旋轉圓弧
一次函数经过象限操作
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Division
Volume
Stochastic Process or Random Process
Subtraction
Hyperbola