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 459
the projection of shadows it is ._^ ^_ advisable to have a set-square made to this angle {9), for with the aid of this angle and 45° we are enabled to project all shadows of this nature. rig. 236 is an arched recess with shadow. Any line in the shadow drawn parallel to ah (45°) would show the… … Fig. 236. Pkoblem 193. The projections of a square being given, to cast its shadoiv.Pig. 237. Let ahdc be the j)lan, and ah the elevation of thesquare. The object of this problem is toshow the different methods of usingthe angle 9, e.g. we could either setit off at h to obtain the point e, anddraw…
Geometrical drawing
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