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 455
eral triangle, to determineits elevation. Fig. 232. First determine an auxiliary ground line (XY), making the same angle with XY as theangle between two of thesides of the given triangle(60°). At any convenient pointon XY draw XY at an angleof 60° with it. Draw theprojector cc perpendicular toXT.… … Fisf. 232. CHAPTEK XXXIII PKOJECTION OF SHADOWS PART L—SHADOWS USED IN PRACTICAL WORK Shadows are of two kinds, viz.:—those cast from a source oflight at an infinite distance, when the rays of light are practicallyparallel to each other, as is the case with the light from thesun; and those cast by…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
