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 49
it leads immediately to another,called its reciprocal. The process by which one Proposition isthus deduced from another, is called reciprocation. The proprietyof the name, as well as the general nature of the process itself,will be understood from the examples which we shall give ; butthe complete… … 38 METHOD OF RECIPROCATION. Draw tangents at the six vertices of the inscribed hexagon;by this means a circumscribed hexagon is formed, whose threediagonals (that is, lines joining opposite angles) are the polars ofthe points of intersection of theopposite sides of the inscribedhexagon; for…
Geometry -- Problems, exercises, etc · Geometry
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
