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Author:
weichen.thsh
GeoGebra
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兩位數加法
画直线等分三角形的面积
【案例】2013年安徽高考15题
拼砌四邊形
找出對稱軸
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梯形
雙曲線之極偶 / polarity for hyperbola
阿波羅圓
線的面畫
小四_分數
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Pyramid
Centroid or Barycenter
Triangles
Root
Perimeter