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Author:
chen mingchuan
GeoGebra
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兩組對邊相等和有直角的四邊形
異分母分數減法
【案例】2013年安徽高考15题
錐體建築師
判斷球體
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gtx-f03-usa-01 美國國旗
folding aeroplane
二次函數中參數對圖形的影響
旋轉縮小的正方形
C60足球模型展开(双色版)
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Quadratic Equations
Triangles
Similar Triangles
Binomial Distribution
Equilateral Triangles