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 255
n Pig. 36, which is precisely similar. Let fall lines from the various points in the elevation, atright angles to XY, till they meet lines drawn from the corre-sponding points in plan (Fig. 36) parallel to XY. Only oneface is shown thus connected (the top face), to save confusionof lines, but the… … Bisect AB in C. With C as centre, and CA as radius, draw THE REGULAR SOLIDS 23s the semicircle AFB. Trisect AB in D and 0. Draw DE per-pendicular to AB, and join EB, which gives the edge of thetetrahedron. Join EA, which gives the edge of the hexahedron. At C draw CF perpendicular to AB, and join…
Geometrical drawing
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