A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 60
§13 GEOMETRICAL DRAWING 45 intersecting- b d c and b dc in c and e. With A and ^ ascenters, and a radius equal to the chord of the arcs A coxBe, describe arcs cutting A B very near to d and d. Fromthe points of intersection of these arcs with A B 2i^ centers,and the same radius, describe the arcs… … Fig. 58 lines of certain sections of a cone. The line O A, whichbisects the area included between the curve and the line B C,is called the axis. Any line, B A or A C, drawn perpendic-ular to O A, and whose length is included between O A andthe curve, is called an ordinate. Any line, as B C, both…
