Given a Triangle , construct the Contact Triangle . Then the Nobbs points are the three points , , and from which and are Perspective, as illustrated above. The Nobbs points are Collinear and fall along the Gergonne Line.
See also Collinear, Contact Triangle, Evans Point, Fletcher Point, Gergonne Line, Perspective Triangles
Oldknow, A. ``The Euler-Gergonne-Soddy Triangle of a Triangle.'' Amer. Math. Monthly 103, 319-329, 1996.