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seven circles theorem

seven circles theorem

about a chain of six circles tangent to a seventh circle and each to its 2 neighbors

en-US/ˈsɛvən ˈsɝkəlz ˈθɪɹəm/

en-GB/ˈsɛvn ˈsɜːklz ˈθɪəɹəm/

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