Let
be the Isotomic Conjugate Point of a point with Trilinear Coordinates
. The isotomic conjugate of the Line at Infinity having trilinear equation

is

known as Steiner's ellipse (Vandeghen 1965).

**References**

Vandeghen, A. ``Some Remarks on the Isogonal and Cevian Transforms. Alignments of Remarkable Points of a Triangle.''
*Amer. Math. Monthly* **72**, 1091-1094, 1965.

© 1996-9

1999-05-26