While the pedal point, Cevian point, and even pedal-Cevian point are
commonly used concepts in triangle geometry, there seems to be no established term
to describe the partitioning of an original triangle into three subtriangles
,
, and
by the selection of a point
. In this work, this process will be called triangulation (by
analogy with more general use of that term), and the point
used to construct such a triangulation will be called a triangulation
point.
There is a remarkable series of theorems involving the triangles produced from an original triangle by triangulation. Let be a triangle center that
is also a triangulation point, and call three triangles produced from an initial
triangle
by this point the triangulation triangles of
. Then a remarkable number of triangle centers obey the following
theorem: If
is a triangle center of a triangle
and
,
, and
are the corresponding centers of the triangulation triangles
of
with respect to
,
then the lines
,
,
and
concur. A number of special cases are summarized in the table below (Hatzipolakis
1999).
is the isogonal conjugate of the complement
of the symmedian point
.