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 434
w itwill be sufficient to consider one point on DR between Dand R (not shown), then by finding the shadow of this pointwe shall be enabled to draw the elliptical arc r0d0. The shadow from the other circular end consists of anelliptical arc extending from r0 to tQ as shown, and passingthrough a.… … i> 0 > r a t ft and that e0t1 touches the circle at tx; note alsothat at and nnQ are tangents to the ellipse at a and n0. The line of separation consists of the generators J?A,TT, together with the semicircles RNT, RDT. This isthe line whose shadow gives the outline. Examples.—1. A cylinder,…
