Six Equal Circles Tangent to Equal Circle

Theorem

It is possible to arrange $6$ equal circles around another circles equal in area to each of the $6$:


Proof


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Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $6$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $6$
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