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 428
with ab, ad, would form theoutline of the shadow of the pyramid on the ground if thevertical plane LM were transparent or were removed. Join e0vv ff)V1 ; then b/0e0dab is the outline (in plan) ofthat part of the shadow which falls on the ground, andf0vxeQ is the outline (in elevation) of the… … 414 PRACTICAL SOLID GEOMETRY chap. 332. Problem.—A given circle, centre C, is parallel tothe vertical plane, to determine the shadow cast by it onthe planes of projection, having given the rays. We must first find the shadow cast on the vertical plane,on the supposition that the horizontal plane is…
