Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 133
Fig 161. AXVBXVEXVDVFV on the vert, proj., CHDHFHEH on the hor.proj., and its shadow on both planes. PROB. 33.—Given a circular plate parallel to one coordin-ate plane; construct its shadow on the other plane. n8 MECHANICAL DRAWIXG. Let AVBVCVDVand AHCH, Fig. 162, be the projectionsof the circular… … Fig. 162. A^B^C^D/1. The shadow of the inscribed circle is an el-lipse tangent to the parallelogram at the points AB^CXHDXH\with B^D^1 and AC as conjugate diameters. The position and length of the axes of the ellipse ofshadow may be found as follows: Erect a perpendicular at the point Cv making…
