List K Similitude Centers of Circles 2 Points available in the Kimberling's Encyclopedia ETC. The ETC version: The 11186 points version of 2016. The "Discoverer" database version: October 2013. Last update: 2017-01-24- The
Internal Center of Similitude of the Circumcircle wrt the Incentral
Triangle and the Nine-Point Circle wrt the Incentral Triangle is the
X(1962).
- The External Center of Similitude of the Circumcircle
wrt the Incentral Triangle and the Nine-Point Circle wrt the Incentral
Triangle is the X(500).
- The Internal Center of Similitude of the
Circumcircle wrt the Incentral Triangle and the Second Brocard Circle
wrt the Incentral Triangle is the X(8143).
- The Internal Center
of Similitude of the Incircle wrt the Incentral Triangle and the Spieker
Circle wrt the Incentral Triangle is the X(1962).
- The External
Center of Similitude of the Incircle wrt the Incentral Triangle and the
Inner Johnson-Yff Circle wrt the Incentral Triangle is the X(500).
- The
External Center of Similitude of the Incircle wrt the Incentral
Triangle and the Outer Johnson-Yff Circle wrt the Incentral Triangle is
the X(500).
- The Internal Center of Similitude of the Nine-Point
Circle wrt the Incentral Triangle and the Tangential Circle wrt the
Incentral Triangle is the X(8143).
- The Internal Center of
Similitude of the Antimedial Circle wrt the Incentral Triangle and the
Circumcircle wrt the Incentral Triangle is the X(1962).
- The
External Center of Similitude of the Antimedial Circle wrt the Incentral
Triangle and the Nine-Point Circle wrt the Incentral Triangle is the
X(1962).
- The External Center of Similitude of the Inner
Johnson-Yff Circle wrt the Incentral Triangle and the Outer Johnson-Yff
Circle wrt the Incentral Triangle is the X(500).
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