Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 30
the point.Given point p and the axis inV, to revolve the point into V(Fig. 22). In this case, as be-fore, the revolved position ofthe point will lie in a perpen-dicular to the axis of revolu-tion and passing through p.The radius of the circle isthe shortest distance from thepoint to the axis, and… … Fig. 23. 20 DESCRIPTIVE GEOMETRY Problem 8.—To revolve a given line into one of the -planesof projection about an axis in that plane and passing throughthe corresponding trace of the line. Given line A and the axis in H passing through the Htrace, to revolve the line into H (Fig. 23). It is…
Geometry, Descriptive
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