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congruent activity
Author:
lamanleung
GeoGebra
New Resources
近似值：有效數字
sanjiaohanshu
畫出對稱圖形
算柱 (兩位數)
判斷球體
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拋物線
基測數學100-1-30 等腰三角形的角度
Copy of 平行四邊形的面積
Copy of 齊來製作對稱圖
四年級除法
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Geometric Mean
Vectors
Definite Integral
Trapezium
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