On the Euler reflection point - Cosmin Pohoata The Euler reflection point E of a triangle is known in literature as the common point of the reflections of its Euler line OH in each of its sidelines, where O and H are the circumcenter and the orthocenter of the triangle, respectively. In this note we prove that E lies on six circles associated with the triangles of Napoleon. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education