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ptccs2new3
Author:
Cheung Wing Chuen
GeoGebra
New Resources
畫出對稱圖形
四邊形的特性
三位數除以一位數（二）
柱體建築師
画直线等分三角形的面积
Discover Resources
畫三角形 題1d
題九
number line
扇形:圖片與動畫使用
面積
Discover Topics
Secant Line or Secant
Cuboid
Interest Calculation
Sine
Vectors 2D (Two-Dimensional)