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Author:陳隆期

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兩位數除以一位數（一）
找出對稱軸
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩組對邊相等的四邊形

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volleyball throughing 1
三角形外角和
四邊形四個西姆松圓交於九點心
vector
数学试卷难点解题思路

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Square
Sphere
Derivative
Difference and Slope
Circumcircle or Circumscribed Circle

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