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椭圆的定义

Author:guomenglin

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近似值：有效數字
找出對稱軸
柱體建築師
兩組對邊相等的四邊形
畫出對稱圖形

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Trajectory of system: y'=y^2-y
畢達哥拉斯定理
判斷線型函數y=f(x)=ax+b的b值(隨機出題)
Mearm2
Illusion-外凸的正方形
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Algebra
Prism
Congruence
Hypothesis Testing
Arithmetic

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