IMO 1959 Problem 04

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IMO 1959 Problem 04                                                      
Construct a right-angled triangle whose hypotenuse c is given            
if it is known that the median from the right angle equals the           
geometric mean of the remaining two sides of the triangle.               
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Copyright (c) 2009 Laurens Rodriguez Oscanoa                             
This code is licensed under the MIT license:                             
http://www.opensource.org/licenses/mit-license.php                       
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