The Feuerbach Theorem states that the nine-point circle is internally tangent to the incircle and externally[br]tangent to the three excircles.[br][br]The Feuerbach point is the point of tangency between the incircle and nine-point circle.

Točka, kjer se včrtana krožnica trikotnika in Eulerjeva krožnica tega trikotnika[br]dotikata, se imenuje Feurbachova točka [i]F [/i]trikotnika