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Author:
黃斌
GeoGebra
New Resources
畫出對稱圖形
兩位數除以一位數（二）
球体的体积推导
柱體建築師
判斷球體
Discover Resources
角平分線
真分數相乘
橢圓軌跡
與兩圓相切的動圓圓心軌跡
Copie de 河內塔 (Tower of Hanoi)
Discover Topics
Fractions
Multiplication
Equilateral Triangles
Statistical Characteristics
Complex Numbers