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GeoGebra
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Author:
周利利
GeoGebra
New Resources
椭圆内切圆链
第八周作业1
龙形曲线-分形龙2
科赫雪花
比較五件物件的重量
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test
gltcf 長方體
Geometry : Types of Angles (幾何:角的種類)
滑桿動畫示範-3(畢氏定理)
旁心
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Centroid or Barycenter
Ellipse
Pyramid
Parametric Curves
Cosine