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陳兪宏
吳孟哲老師幾何題
GeoGebra
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算柱 (兩位數)
画直线等分三角形的面积
四邊形的特性
拼砌四邊形
【案例】2013年安徽高考15题
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輪盤輪盤
number line
圓點線
单晨答GeoGebra绘图与课件制作北京王勇第二题
銳角三角：sin, cos
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Probability
Incircle or Inscribed Circle
Dilation
Stochastic Process or Random Process
Equations