Resumen de Sobre el lugar de puntos cuya suma de distancias a los vértices de un cuadrado es constante
Ricardo Moreno Castillo 
The locus of points in the Euclidean plane whose sum of distances to the four vertices of a square is a constant quantity is cosidered. This geometric locus leads to certain fourteen degree algebraic curves. Some properties of these curves are studied in this article. Their graphs are really extravagant curves
