Tham khảo Đường_thẳng_Euler

  • Kimberling, Clark (1998). “Triangle centers and central triangles”. Congressus Numerantium. 129: i–xxv, 1–295.

Tài liệu tham khảo

WikiPedia: Đường_thẳng_Euler http://ijgeometry.com/wp-content/uploads/2014/10/8... http://www.mathopenref.com/eulerline.html http://demonstrations.wolfram.com/EulerLine/ http://mathworld.wolfram.com/EulerLine.html http://math.dartmouth.edu/~euler/pages/E325.html http://faculty.evansville.edu/ck6/encyclopedia/ETC... http://faculty.evansville.edu/ck6/tcenters/class/e... http://forumgeom.fau.edu/FG2009volume9/FG200924ind... http://math.kennesaw.edu/~mdevilli/JavaGSPLinks.ht... http://math.kennesaw.edu/~mdevilli/conicEuler.html