List K
External Center of Similitude of Circles of the Gossard Triangle.
Points available at the Kimberling's Encyclopedia ETC.
The ETC version: The 8998 points version of 2015.
The "Discoverer" database version: October 2013.
Last update: 2016-05-08
  1. The External Center of Similitude of the Circumcircle and the Nine-Point Circle of the Gossard Triangle is the X(4240).
  2. The External Center of Similitude of the Circumcircle and the Antimedial Circle of the Gossard Triangle is the X(1650).
  3. The External Center of Similitude of the Incircle and the Spieker Circle of the Gossard Triangle is the X(4240).
  4. The External Center of Similitude of the Nine-Point Circle and the Circumcircle of the Gossard Triangle is the X(1650).
  5. The External Center of Similitude of the Antimedial Circle and the Circumcircle of the Gossard Triangle is the X(4240).
  6. The External Center of Similitude of the Spieker Circle and the Incircle of the Gossard Triangle is the X(1650).