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GeoGebra
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百分數及其應用
直線的斜率
撒针估算面积实验
圓的基本性質
折扣
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三角比一
面鏡的反射
ghseh 二次函數描點法左右平移-6
Copy of 固定周界的長方形的面積變化
Chords of a Circle
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Division
Coordinates
Calculus
Statistical Characteristics
Similar Triangles