Euler Line

The Euler Line is the line defined by the the Centroid G and the Circumcenter O.
The Euler Line includes the following points:
Orthocenter H,
Nine-point Center N,
de Longchamps Point L,
Schiffler Point Sf,
Exeter Point E,
Far-out Point (outside the figure below),
Center of the Orthocentroidal circle Oc,
Skordev Point Sk.