It is possible using the Fano plane

来源: innercool 2009-10-10 14:18:11 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 次 (245 bytes)
Use the Fano plane in projective geometry, then you have 7 points with 3 points in each of the 6 lines. Now add another flower at each of the 3 points (so that each of the point has two flowers on it) on the inscribed circle within the triangle.

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By Fano plane I meant this. -innercool- 给 innercool 发送悄悄话 innercool 的博客首页 (90 bytes) () 10/11/2009 postreply 22:06:33

Sorry, try again. -InnerCool- 给 InnerCool 发送悄悄话 InnerCool 的博客首页 (121 bytes) () 10/11/2009 postreply 22:08:23

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