Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 28
FiG. 60. Fig. 61. bola. Fig. 59. If the cutting plane forms a greaterangle than the parabola, with the surface, so that the cone is cut in the manner shown in Fig. 60, thes?ction is an ellipse, Fig. 61. t^ pyramid is a solid, whose base is a polygon,and whose sides are formed by triangles. The… … Fig. 62. Fig. 63. Fig. 64. Fig. 65. Pyramids are classified as triangular, quadrangu-lar, pentagonal, hexagonal, etc., pyramids, depend-ing upon the shape of their base, Figs. 62, 63, 64. If the base of a pyramid forms a regular polygon,and a perpendicular dropped from the apex, to thebase, passes…
Mechanical drawing · Machine design
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