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初犯九點圓

Author:XIE Yuheng

九點圓

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找出對稱軸
算柱 (兩位數)
異分母分數減法
【案例】2018年全国1卷理科12题
畫出對稱圖形

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正多邊形滾動
Translation 平移變換
圖形的周界
探究三角形的全等條件
表内除法

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Hyperbola
Standard Deviation
Scalene Triangles
Centroid or Barycenter
Vectors 3D (Three-Dimensional)

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