The extremities of Parallel Radii of two Circles are called homologous with respect to the Similitude Center collinear with them.

**References**

Johnson, R. A. *Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle.* Boston, MA:
Houghton Mifflin, p. 19, 1929.

© 1996-9

1999-05-25