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20170421_001
Author:
sinmei5
GeoGebra
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双心四边形
盈利與虧蝕
撒针估算面积实验
科赫雪花
常见四边形是否是双心四边形
Discover Resources
微積分基本定理
正角柱體
立體圖形
Hyperbola_Vertical
拋物線6-包絡線法
Discover Topics
Hyperbola
Functions
Triangles
Incircle or Inscribed Circle
Linear Functions