1985 OIM Problems/Problem 2
Problem
Let 
be a point in the interior of equilateral triangle 
such that:
![\[PA=5,\;PB=7,\; and \; PC=8\]](http://latex.artofproblemsolving.com/d/a/6/da6667e0d97ec0389974191bbe91ab057c9df9db.png)
Find the length of one side of the triangle
Solution
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