What is the maximum number of points in the Euclidean plane with the property that given any three points, at least two are at distance one apart?

I do wish that people would take greater pains to simply, definitely and understandably word their problems, so that a good problem isn't ruin for that person who stumbles across the solution while trying to completely understand the contraints of the problem.

Posted by Charley on 2005-05-26 23:57:21