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Orthocentre

Author:uccke

New Resources

畫出對稱圖形
兩組對邊相等的四邊形
拼砌四邊形
直角坐標平面上的旋轉變換
三位數除以一位數（一）

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等棍的包絡線
分段函數
三視圖04
函数情调
蝴蝶定理（唐老师的课程）

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Quadratic Equations
Parametric Curves
Set Theory
Exponential Functions

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