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平行線法

Author:chen mingchuan

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【案例】2013年安徽高考15题
兩位數加法
兩組對邊相等的四邊形
錐體建築師
兩組對邊相等和有直角的四邊形

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商高定理\水
二維碰撞
四次函數
電子幾何條的副本
n等分单位圆作正弦曲线

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Perimeter
Exponential Functions
Quadratic Equations
Means
Interest Calculation

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