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Author:王廷祐

Topic:Orthocenter

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判斷球體
兩組對邊相等的四邊形
四邊形的特性
算柱 (兩位數)
【案例】2013年安徽高考15题

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認識GeoGebra--相似三角形
從 12 面體、20 面體到 C60 C80
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勾股定理证明2
sin(x) 的函數圖形官長壽老師

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Statistics
Geometric Transformations
Kite
Hypergeometric Distribution
Vectors 2D (Two-Dimensional)

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