It is possible using the Fano plane

來源: 於 2009-10-10 14:18:11 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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.