A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 346
of similitude from twohomologous points are to each other as the radii. 1035. CoR. 3.—The cejitres of similitude and the centres of thecircles are four harmonic points. 1036. JProp.—If a circle touch two others, the line joining theirpoints of contact imsses through the external centre of…
Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
