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Author:
彭西东
GeoGebra
New Resources
異分母分數減法
判斷球體
拼砌四邊形
找出對稱軸
兩位數除以一位數（一）
Discover Resources
Prism and Cylinder 5
立體圓錐與斜切面關係
斜率
負指數的計算
圆周上的动点形成椭圆
Discover Topics
Continuity
Hypergeometric Distribution
Pyramid
Solids or 3D Shapes
Quadrilaterals