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IMO2015D

Author:Terence

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找出對稱軸
畫出對稱圖形
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
兩位數加法

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直線與圓的位置關係
gjc102a14 三角形內的高
透過長方形面積方法計算二項式乘二項式
识货
抛物线定义

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Circumcircle or Circumscribed Circle
Interest Calculation
Similar Triangles
Parametric Curves
Congruence

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