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ptccs2new3
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Cheung Wing Chuen
GeoGebra
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圓周公式的應用
垂直線的斜率
画直线等分三角形的面积
球体的体积推导
平行線的斜率
Opdag Ressourcer
Quiz on Equation of Straight Lines 直線的方程：測驗
奈格爾點
數播線上201802
Copy of 随机模拟实验（撒豆子估算π）
v型咖啡濾網
Udforsk emner
Cirkeldiagram
Trekanter
Vectorer 2D (Todimensionel)
Aritmetiske operationer
Rektangel