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 421
m d draw the lines dh, di, tangential to thiscircle. Join hi. Then dfhi is the supplementary elevationof the second cone. Project its base by drawing projectors fromli and i perpendicular to ad and meeting it in h and i. Com-plete the ellipse forming the projection of the base of this cone. The… … Fig. 194. line hi in the points I and n. Take the distances these pointsare from the line ad, and measure them off on projectors fromI and n above XY. These give the points I, n. We have now obtained the projections of three points ineach of the T. planes illustrated in D and E (Fig. 194); viz.…
Geometrical drawing
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