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Four points on a Plane (Posted on 2004-11-21) Difficulty: 2 of 5
How many ways can four points be arranged in a plane so that the six distances between pairs of points take on only two different values?

See The Solution Submitted by Erik O.    
Rating: 4.1429 (7 votes)

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answer Comment 15 of 15 |
The required number of ways is six.
  Posted by K Sengupta on 2007-11-24 05:42:12
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