Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 155
Fig. 275. the corresponding points in E F to the circular arc E 0 F, as points in theelliptical arc required. The remaining elliptical arcs can be traced by thesame method. 138 ORTHOGRAPHIC PROJECTION. … Required to clraiu the lines of penetration of a cylinder and a spliere^ thecentre of the sphere heing loithout the axis of the cylinder (Fig. 275). Let the circle D E L be the projection of the base of the given cylinder,and let A B be the diameter of the given sphere. If a plane, as c d\ be…
Mechanical drawing
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