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捷徑

Author:chen mingchuan

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sanjiaohanshu
近似值：有效數字
Nested spiral octagon
國旗 (作圖步驟直接餵給 Claude)
畫出對稱圖形

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阿基米德(5,6,6)
圍周
如何判斷曲線夠不夠圓
Copy of 劉徽的「割圓術」
周长相等，正方形，长方形和正三角形，圆面积大小比较

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Equilateral Triangles
Pyramid
Quadrilaterals
Sine
Difference and Slope

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