Elementary linear perspective of form and shadow ... Complete in itself ... For draftsmen, artists, and industrial drawing courses in preparatory and high schools, etc. In two parts.. (1891)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 72
ofcontact with the sphere. 6°, and lastly : That the point where thedement of tangency oi 2^ plane and cone intersects the circle of tan-gency of the same cone vnth a sphere., will be the point of contactof that plane with the sphere. 62 IJNEAR PERSPECTIVE. If now the given point in space (3^) be… … Now in Fig. 33, let Ym-ABd be the given sphere, PQP theperspective plane, and EE the point of sight. Assume the circleAW—Au^t as the circle of contact of an auxiliary tangent cone(5<^). The tangents VA and VB complete the vertical projectionof this cone. EV-EV, the visual ray through YV, the…
Perspective · Mechanical drawing
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