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圆之吻（Apollonius circles）
Author:
赵林
Topic:
Circle
,
Incircle or Inscribed Circle
GeoGebra
New Resources
Earth with coastline
Nested spiral octagon
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
美國國旗 (Codex 版)
Discover Resources
我的解法
平行線 (同位角 - 4對)
Archimedean spiral
小遊戲
gitfh 複合圖形-正四角柱中挖圓柱
Discover Topics
Polygons
Arithmetic
Continuity
Logarithm
Inequalities