First principles of mechanical and engineering drawing (1897)
Holt-Butterfill, H · London : Chapman & Hall · leaf 205
draw lines at rightangles to bd, to cut b c?, which completes the development required.The envelope of the prism thus produced will, when folded over on theedges represented in dotted lines, be found to cover without vacuitiesall the surfaces of the given prism. 83. As the development of the… … MECHANICAL AND ENGINEERING DRAWING 193 Problem 89 (Fig. 193).—Given the elevation of a square pyramid; tofind the development of its surface. Let ABC, No. 1, in Fig. 193, be the elevation of the pyramid. Asall its sides are alike, and incline equally to its apex, it is first necessaryto know the…
Mechanical drawing
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