Moreover, in analogy with the classical Ajima-Malfatti configuration, there is an interesting triangle center. In the figure, the reference triangle is labeled ABC, and the points of pairwise tangency of the circles are labeled A', B', C'. The lines AA', BB', CC' concur in the Yff-Malfatti point, labeled YM.

Trilinear coordinates for the Yff-Malfatti point are

[csc(A/4)]^4 : [csc(B/4)]^4 : [csc(C/4)]^4.

(For a quick lesson on trilinears, click on TRILINEAR COORDINATES.)

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