Principles of modern geometry, with numerious applications to plane and spherical figures; and an appendix, containing questions for exercise. Intended chiefly for the use of junior students (1862)
Mulcahy, John, 1810?-1853 · Dublin Hodges, Smith · leaf 185
174 THE SPHERICAL ELLIPSE. … respectively, are equal. (The cyclic arcs of a spherical conic arethe two great circleswhose planes are thecyclic planes of thecone.) (Chasless Me-moir in Spherical Co-nies, Art. 13.) The theorem fol-lows at once from the Proposition proved in the last Article,since arcs on the sphere are the…
Geometry -- Problems, exercises, etc · Geometry
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
