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 532
ographic projec-tion two views of an objectare required (plan and eleva-tion), but Isometric projec-tion combines both views inone projection. It possessesalso, to a certain extent, thenatural appearance of per-spective projection, with theadditional advantage of uni-formity of scale; for… … Fig. 290. 512 SOLID GEOMETRY Assume ag to be the axis of a riglit cone, and etc, ad itsgeneratrices. As the edges of a cube are all of equal length, theline ac must be equal to ad. On plan the generatrices of aright cone are always drawn of equal length, so ac is equalto ad. The same thing would…
Geometrical drawing
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