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例2 22.5 67.5
Author:
谢鹏
GeoGebra
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算柱 (兩位數)
四邉形 (四年級) 教師版
近似值：有效數字
小数 的副本
畫出對稱圖形
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橢圓軌跡 (3)
周界
bay1-2&1-3
平行四邊形的面積的副本
学习 GeoGebra 课堂
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Rhombus
Differential Calculus
Area
Integral Calculus
Scalene Triangles