Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 487
he points, as shown, to complete the shadow. Peoblem 215. To determine the shadoio of a given octahedron on lioth planes ofprojection, the projections of the luminous point lacing given.Fig. 265.Let A and A be the projections of the given solid, and Land L the projections of the luminous point. 2 H… … .^T-.JZi/ 1 \/\ i \ 7 d n;^\ 1 \ / \v?r. Fig. 265. 0 a line from U through e, cutting XY in E, till it meets a pro-jector from i. This is the Y.T. required. Draw a projector fromE till it meets ei in E. Draw a line from the Y.T. through Etill it meets XY in /. Join ^G. Join Dh and E/i. Find the…
Geometrical drawing
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