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一线三等角
Author:
宋晓燕
GeoGebra
New Resources
盈利與虧蝕
小学资源收集
龙形曲线-分形龙2
科赫雪花
折扣
Discover Resources
題 2
旋轉體:Washer Method
分段移動
L形分割
Arbelos
Discover Topics
Histogram
Addition
Centroid or Barycenter
Right Triangles
Incircle or Inscribed Circle