RU-ORAL-GEOMETRY 2015 Problem 3

In triangle $ABC$ , points $D, E$ , and $F$ are marked on sides $AC, BC$ , and $AB$ respectively, so that $AD = AB$ , $EC = DC$ , $BF = BE$ . After that, they erased everything except points $E, F$ and $D$ . Reconstruct the triangle $ABC$ (no study required).