Difference between revisions of "1973 IMO Problems/Problem 2"
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select two other points C and D of M so that lines AB and CD are parallel | select two other points C and D of M so that lines AB and CD are parallel | ||
and not coincident. | and not coincident. | ||
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| + | [[Category:Olympiad Geometry Problems]] | ||
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Revision as of 23:37, 18 July 2016
Determine whether or not there exists a finite set M of points in space not lying in the same plane such that, for any two points A and B of M; one can select two other points C and D of M so that lines AB and CD are parallel and not coincident. This problem needs a solution. If you have a solution for it, please help us out by adding it.
