Nguyen Thanh Dung,
The Feuerbach point and the Fuhrmann triangle,
Forum Geometricorum, 16 (2016) 299--311.
Abstract. We establish a few results on circles through the Feuerbach point of a triangle, and their relations to the Fuhrmann triangle. The Fuhrmann triangle is perspective with the circumcevian triangle of the incenter. We prove that the perspectrix is the tangent to the nine-point circle at the Feuerbach point.
[ps file] [pdf]
Return to Forum Geom., 16 (2016) Table of Contents