Apollonian circles
Apollonian circles are two families of circles such that every circle in the first family intersects every circle in the second family orthogonally, and vice versa. These circles form the basis for bipolar coordinates. They were discovered by Apollonius of Perga, a renowned Greek geometer.
Q17278
circle
Concept
Q215067
orthogonal
Concept
Q2383591
bipolar coordinates
Concept
Q180109
Apollonius of Perga
PER
Q11772
Greek
LOC
Q3235798
geometer
UNK
Q773862
Apollonian circles
Concept
named after