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Feb 18, 2016 at 11:30 comment added Jeppe Stig Nielsen If we stay in the plane (2D), and we let $n\in\mathbb{N}$ be a finite number, for what $n$ can we have $n$ distinct points, not all collinear, such a all distances are integers? Is this obvious? Edit: Ah, I found the answer myself at Math Stack Exchange.
S Feb 18, 2016 at 6:39 history answered Chris McDaniel CC BY-SA 3.0
S Feb 18, 2016 at 6:39 history made wiki Post Made Community Wiki by Chris McDaniel