Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 360
ethod.—The tangent plane at Pis perpendicularto SP, hence its traces are perpendicular to sp and sp re-spectively. To determine these traces draw pc perpendicular to spand/V parallel to xy; then PC is a horizontal line passingthrough P, contained by the tangent plane and having Cin its vertical… … 346 PRACTICAL SOLID GEOMETRY chap. 289. Problem. — A given cylinder, axis AB, lies witha generator on the horizontal plane. It is required todetermine the plane which shall touch the cylinder at apoint whose plan p is given. Let the rectangle cdefbe the given plan of the cylinder. First…