Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 77
Pyramid. Fig. 21. frustum not, as yet, entering into the problem. The draw-ings are constructed in the order numbered, that the edges of 2may be projected from 1. Now that the pyramid is fixed, let … Fig. 22.the upper base of the frustum be formed by cutting the pyramidwith a plane, T, which is perpendicular to V and at 300 with H,and let the cutting plane intersect the vertical center line of the PROJECTION. 59 pyramid at a point one inch above its base. The plane of theupper base of the…
Mechanical drawing
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