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折扣 例1
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
球体的体积推导
異分母分數減法
畫出對稱圖形
四邉形 (四年級) 教師版
拼砌四邊形
Discover Resources
equilateral triangle construction
複合圖形(三)
求一數佔全部的幾分之幾？
函数作图工具的副本
平面截距式的副本
Discover Topics
Linear Programming or Linear Optimization
Root
Arithmetic
Planes
Rectangle