The intui tion solution. 15young ,this is ...

来源: 于 2011-08-12 09:03:06 [旧帖] [给我悄悄话] 本文已被阅读：次

           o1              o4'              o7 center,roting o4',o5',o6' 150 degree.

    o2    o5         o7              o6'    using this metuod can say the unique

           o3              o5'              (isomorphic) and say n<8.Ok not the best.

    o6           o4                          BTW,14A and 14B                              is possible,regular                                      hexagon,o7 inside o8 outside.