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Weighted Mean 加權平均數
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
錐體建築師
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
四邊形的特性
畫出對稱圖形
Discover Resources
挑战中考压轴题1.1.3
分1
一年級
seq,tra
五上-CP4-第三节平行四边形面积1
Discover Topics
Hypergeometric Distribution
Vectors 3D (Three-Dimensional)
Arithmetic Mean
Probability
Cylinder