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圓與切線
Author:
WU CHUNG WEI
GeoGebra
New Resources
錐體建築師
畫出對稱圖形
兩位數除以一位數（二）
球體建築師
兩位數除以一位數（一）
Discover Resources
棋盤的 L 形覆蓋
gsx-b1 數線上的點
圖形拼砌
拋物線4--平行四邊形法
HKCEE 2010 Q15
Discover Topics
Fractions
Arithmetic Operations
Incircle or Inscribed Circle
Derivative
Vectors 3D (Three-Dimensional)