Circular points
From Encyclopedia of Mathematics
cyclic points, on the plane completed by imaginary points at infinity
The two imaginary points at infinity whose homogeneous coordinates 
and 
satisfy the equation of any circle. Straight lines passing through circular points are known as isotropic lines.
How to Cite This Entry:
Circular points. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Circular_points&oldid=31662
Circular points. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Circular_points&oldid=31662
This article was adapted from an original article by BSE-2 (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article