or ABC is not triangle

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For arbirary three points, at least one distance of a pair is 1. -wxcfan123- 给 wxcfan123 发送悄悄话 (67 bytes) () 08/13/2011 postreply 13:53:22

It this is true, you can put any number points on one line. -wxcfan123- 给 wxcfan123 发送悄悄话 (0 bytes) () 08/13/2011 postreply 13:56:48

sorry, i misunderstand the question -15少- 给 15少 发送悄悄话 15少 的博客首页 (0 bytes) () 08/13/2011 postreply 14:09:50

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