Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 59
the vertex to thebase are the same length. As thecone rolls, it moves about its vertexV, which remains stationary. Oneafter another the different lines,or elements, of its surface cometo the paper, and, as they are of equal length, the development ofthe circumference of the base is an arc of a… … Fig. 19. DE VEL OPMENTS. 51 To determine the length of the arc bounding the development ofthe lateral surface, divide the base of the cone into twelve equalparts, as in the case of the cylinder, and set off, upon the arc, oneof these spaces twelve times. The development of the base of the cone is a…
Mechanical drawing
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
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