PyGeo: a dynamic geometry toolkit

z_lines

lines of the complex plane (i.e. circles of infinite radius)

f zLine() ...

factory function returns instance of a class representing a line (circle of infinite radius) of the complex plane

constructors:
zLine (zcircle1,zcircle2 )
line of the complex plane determined as the radical axis of the given 2 the complex circles arguments
zLine (zpoint1,zpoint2 )
line of the complex plane through the given 2 complex point arguments

See the source for more information.