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 276
a line ARperpendicular to the plane vth. The problem thereforereduces to the last one. Therefore draw the projections of an upright conewith vertex A and base angle 9. Obtain n, the horizontaltrace of AR; and from n draw a tangent (there are two)to the plan of the base of the cone, thus obtaining… … 262 PRACTICAL SOLID GEOMETRY chap. 234. Problem.—To determine the traces of a planepassing through a given point A, having a given inclina-tion o, and making an angle a with a given plane VTH. If there be two cones having ias a common vertex,their base angles being 0 and a respectively, then if…
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