Feuerbach point

English

The nine-point circle is tangent to the incircle and excircles of a triangle. The incircle tangency is the Feuerbach point.

Etymology

Named after Karl Wilhelm Feuerbach.

Noun

Feuerbach point (plural Feuerbach points)

1. (geometry) A kind of triangle center, defined as the point at which the incircle and nine-point circle of the triangle are internally tangent to each other.

Related terms

• Feuerbach's theorem
• Feuerbach triangle