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三角測量
Author:
1041018
GeoGebra
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祖冲之的期望：内棋与外棋
讀磅
平行線的斜率
撒针估算面积实验
龙形曲线-分形龙
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高中, 直線與點對稱
五位數
sierpinski carpet
Copy of 蔡01
two-example
Discover Topics
Subtraction
Kite
Expected Value
Similar Triangles
Unit Circle