Derousseau's Generalization of the Malfatti circles

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


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

\(\mathbf{5a}\) \((213)\)

\(\displaystyle\overrightarrow{AA^\prime}=-\frac8{55}\overrightarrow{AI_A}\),   \(\displaystyle\overrightarrow{BB^\prime}=-\frac{55}{32}\overrightarrow{BI_A}\),   \(\displaystyle\overrightarrow{CC^\prime}=-\frac{22}5\overrightarrow{CI_A}\).
\(\displaystyle A^\prime=\frac{69}{55}:-\frac{100}{847}:-\frac{578}{4235}\),   \(\displaystyle B^\prime=\frac{165}{128}:\frac{593}{448}:-\frac{1445}{896}\),   \(\displaystyle C^\prime=\frac{33}{10}:-\frac{25}7:\frac{89}{70}\).
5a (213)

Hiroyasu Kamo