The arbitrary triangle:
      The altitude-median-bisector concurrence

   The problem:
   Let ABC be the arbitrary triangle.
   Let the median AD, the bisector BE, and the altitude CF meet at the point S.
   Find the relation between the angles of ABC.

   Hint:
   The line EF is parallel to the side CB.
  

   Answer:
    N/A

   Solution:
   N/A