5. abc 正三角,d is outside abc. ad=ab=bc=ac, bd=cd
所有跟帖:
• This is the same as my 4 -oops_yz- ♀ (0 bytes) () 04/08/2010 postreply 11:06:15
• This is the same as my 4 -oops_yz- ♀ (0 bytes) () 04/08/2010 postreply 11:06:15
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