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Brianchon Point

The point of Concurrence of the joins of the Vertices of a Triangle and the points of contact of a Conic Section Inscribed in the Triangle. A Conic Inscribed in a Triangle has an equation of the form

\begin{displaymath}
{f\over u}+{g\over v}+{h\over w}=0,
\end{displaymath}

so its Brianchon point has Trilinear Coordinates $(1/f, 1/g, 1/h)$. For Kiepert's Parabola, the Branchion point has Triangle Center Function

\begin{displaymath}
\alpha={1\over a(b^2-c^2)},
\end{displaymath}

which is the Steiner Point.




© 1996-9 Eric W. Weisstein
1999-05-26