Let H be the orthocenter, O the circumcenter, HaHbHc the antipodal of the circumcevian triangle of H, EaEbEc the circumcevian triangle of O. Let Oa, Ob, Oc be the circumcenters of OEbEc, OEcEa, OEaEb. The triangles OaObOc, HaHbHc are homothetic, with center in the Euler line.