Apollonian circle in German
Apollonian circle in German
Kreis des Apollonios
(geometry) Any circle in two families of circles such that every circle in the first family intersects every circle in the second family orthogonally and vice versa.
apollonischer Kreis
(geometry) Any circle in two families of circles such that every circle in the first family intersects every circle in the second family orthogonally and vice versa.