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Regular Tetrahedron 1234 (Posted on 2012-03-08) Difficulty: 3 of 5
A regular tetrahedron lies with its four vertices at respective distances from the origin as 1, 2, 3 and 4 units. What is the length of each edge of the tetrahedron?

No Solution Yet Submitted by K Sengupta    
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re: Is it possible? | Comment 5 of 8 |
(In reply to Is it possible? by Jer)

Haven't you proven that there is not an integral solution?
  Posted by xdog on 2012-03-09 20:25:29

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