Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 101
rsecting. Place the surfaces with axes parallel to V and one of theaxes perpendicular to H. With center at the intersectionof the axes take a series of spheres which intersect the givensurfaces in circles, the elevations of which are straight lines.The plan of one is a circle and of the other an… … Fig. 171. INTERSECTION OF SURFACES 91 the point of intersection of the two p,xes, draw a sphere whichcuts both cylinder and cone in circles. The V projectionof both circles are straight lines, the H projection of one isthe circle shown, and of the other an ellipse, which is notshown. The points a,…
Geometry, Descriptive
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