最終更新日：2025/11/25
In inversive geometry, an Apollonian circle is a member of one of two families of circles such that every circle in the first family intersects every circle in the second family orthogonally.
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In inversive geometry, an Apollonian circle is a member of one of two families of circles such that every circle in the first family intersects every circle in the second family orthogonally.
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