Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 549
= 573°. With A as centre, and radius AC, drawa quadrant till it meets a perpendicular on A in D. Draw theline AE at an angle of 55° with AC, cutting the arc in F. Draw 528 SOLID GEOMETRY a line from D perpendicular to AD till it meets AE in E, also aline from F parallel to ED and cutting AD in G.… … Fig. 305. Now return to Eig. 305. As the scale of this figure istwice that of Eig. 306, make AD = twice the co-tangent (DE) ofEig. 306. With D as centre, and all the divisions on DE asradii, draw arcs for the parallels of latitude. The arc EG (55°)is the development of the circle of contact between…
Geometrical drawing
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