7.

回答: 请教一个从网上发现的题。wxcfan1232011-08-09 06:55:32

所有跟帖: 

请教,能不能说说证明? -wxcfan123- 给 wxcfan123 发送悄悄话 (0 bytes) () 08/09/2011 postreply 11:25:29

Thx,I t should be 8, It construct by 4 Tringles. Busiy now. -jinjing- 给 jinjing 发送悄悄话 (0 bytes) () 08/09/2011 postreply 13:18:12

I construct for you. -jinjing- 给 jinjing 发送悄悄话 (365 bytes) () 08/09/2011 postreply 15:59:07

回复:I construct for you. I learned from BUYI.using "o", -jinjing- 给 jinjing 发送悄悄话 (404 bytes) () 08/09/2011 postreply 16:27:21

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