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Author:
Ricky Chan
GeoGebra
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【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
拼砌四邊形
柱體建築師
異分母分數減法
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凸透鏡成像
角平分線-1
兩圓及交弦
禪繞畫
正棱台的侧面展开效果
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Rhombus
Upper and Lower Sum or Riemann Sum
Equations
Statistics
Quadratic Equations