Derousseau's Generalization of the Malfatti circles

\(a:b:c=231:250:289\).


Jump
[Guy]
[Lob & Richmond]
(0**)
(1**)
(2**)
(3**)

\(\mathbf{6a}\) \((231)\)

\(\displaystyle\overrightarrow{AA^\prime}=-\frac1{11}\overrightarrow{AI_A}\),   \(\displaystyle\overrightarrow{BB^\prime}=-\frac{99}{16}\overrightarrow{BI_A}\),   \(\displaystyle\overrightarrow{CC^\prime}=-\frac{11}9\overrightarrow{CI_A}\).
\(\displaystyle A^\prime=\frac{51}{44}:-\frac{125}{1694}:-\frac{289}{3388}\),   \(\displaystyle B^\prime=\frac{297}{64}:\frac{485}{224}:-\frac{2601}{448}\),   \(\displaystyle C^\prime=\frac{11}{12}:-\frac{125}{126}:\frac{271}{252}\).
6a (231)

Hiroyasu Kamo