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 42
EXAMPLES ON INVOLUTION. 31 … where they cut the tranversal be called D and D, we shall have(by Prop. 2°) the two pairs of points, A, A/ A and C, C, in involution with D, D;but they are also in involution with B, B;therefore (Art. 30) any three of the fourpairs are in involution. 4°. If three chords of a circle intersectin a…
Geometry -- Problems, exercises, etc · Geometry
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
