crucial point

The extangents triangle is homothetic to the orthic triangle, and its homothetic center is known as the Clawson point, or sometimes the "crucial point." It has equivalent triangle center functions α | = | tan A α | = | sin(2B) + sin(2C) - sin(2A) and is Kimberling center X_19.

extangents triangle | homothetic center | orthic triangle