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Author:
褚 军
Topic:
Trigonometry
GeoGebra
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拼砌四邊形
錐體建築師
【案例】2013年安徽高考15题
三位數除以一位數（一）
異分母分數減法
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等量公理
gjh-g05-00 平方差公式
小四平面圖形學習單
張春興0302
表内除法
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Incircle or Inscribed Circle
Means
Sine
Linear Equations
Conic Sections