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 399
tothe Y.P.; the T.P. to he parcdlel to a given line. Pig. 177. Let A and A be the projections of the given cone, and ah,ah, of the given line. 37S SOLID GEOMETRY Draw the projections of the axis. Produce the sides of the cone in elevation till they meetXY in the points d\ e. Let fall projectors… … Fig. 177. draw ij perpendicular to the axis produced. With / as centre,and radius ji, draw an arc till it meets a line drawn from Jcparallel to the axis in I. From / set off on gh, fg and fh, eachequal to M. Then gh is the minor axis of the ellipse. Drawthe ellipse (Prob. 181, Plane Geometry). This…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
