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圆之吻（Apollonius circles）
Author:
赵林
Topic:
Circle
,
Incircle or Inscribed Circle
GeoGebra
New Resources
柱體建築師
兩組對邊相等的四邊形
球体的体积推导（优化版）
畫出對稱圖形
錐體建築師
Discover Resources
優良作品2
Gradient of tangent
滾動的圓
加法有圖案
整數
Discover Topics
Parabola
Similarity Transformation or Similarity
Secant Line or Secant
Quadrilaterals
Random Experiments