Exeter point

English right|thumb|Construction of the Exeter point of a triangle Etymology Named for the Phillips Exeter Academy (in the town of Exeter, New Hampshire), where it was discovered during a computers-in-mathematics workshop in 1986. Noun en geometry given a triangle ΔABC whose medians intersect its circumcircle at {A, A’}, {B, B’} and {C, C’} and ΔDEF constructed from the tangent lines at A, B and C such that D, E and F are respectively opposite A, B and C The point of concurrence of the rays DA’, EB’ and FC’. en 2015 Gerard Venema Just the Facts 101: Foundations of Geometry Cram101 Textbook Reviews https://books.google.com.au/books?id=NB4sBQAAQBAJ&pg=PT53&dq=%22Exeter+point%22%7C%22Exeter+points%22&hl=en&sa=X&ved=0ahUKEwiKysWFyvfNAhVCW5QKHcC8A_YQ6AEIQjAH#v=onepage&q=%22Exeter%20point%22%7C%22Exeter%20points%22&f=false unnumbered It [the Euler line] passes through the centroid, the Exeter point and the center of the nine-point circle of the triangle. Usage notes Designated X(22) in Clark Kimberling Clark Kimberling's online Encyclopedia of Triangle Centers. Further reading Exeter Point on MathWorld Wolfram MathWorld