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Author:
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GeoGebra
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折扣
撒针估算面积实验
直線的斜率
斜率的值
第八周作业3
Discover Resources
旋轉一物件02
Copy of 長方形與正方形的面積
HKMO 2008 Question 3 Demonstration (Geometric Construction)
全等双子模型（等腰三角形）
圓錐曲線Conic Section