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 494
on to a given octa-hedron, but inscribed in a sphere one inch in diameter.Fig. 270. Let A and A be the projections of the given octahedron.First inscribe this solid in a sphere. We know that each of its angular points are equidistant INSCRIBED SOLIDS 473 from a point which must be the centre of the… … Fi^. 270. ing manner. Draw a line from h on plan perpendicular to he,and equal in length to the perpendicular height of V above c, viz.d.h. This will give point B. Join Be, which is the true lengthrequired, consequently it is the radius of the circumscribingsphere. With c and c as centres, draw…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
