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 292
g on the H.P., and inclinedat an angle 0/ 30° with the V.P. Fig. 71. Let A and Aj be the plan and elevation of the pyramid. Draw the line X^Y^ parallel to eh, and draw lines from thevarious points in the elevation A^ at right angles to it. Theheight of the line he above X^Y^ will be the same as Ba,… … Fig. 71 at an angle of 30° with eb. Draw lines from the various pointsin the elevation A, at right angles to this line. To find theheights of the various points above the ground line, make BVequal to Ba in the elevation A^, Dd equal to Dd, etc. Byjoining these points we obtain the second elevation…
Geometrical drawing
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