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椭圆的定义

Author:guomenglin

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兩位數除以一位數（一）
兩位數除以一位數（二）
找出對稱軸
四邊形的特性
直角坐標平面上的旋轉變換

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Rectangle_02
Sequence指令練習(正n邊形面積的展開)
可調包絡圓
小棒
a sin(bx+c) + d 的圖形的副本

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Correlation
Line Segment
Parametric Curves
Similar Triangles
General Quadrilateral

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