Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 32
line. This problem is simplified by letting the axis of revolutioncoincide with the H projection of the line (Fig. 24). Therevolution of the assumed point will then be accomplishedby the method of Problem 6. Note.—If the axis of revolution does not pass throughthe H trace of the line, that is, if… … FiQ. 26. Given plane 2, to revolve it into H about its H trace (Fig. 25). This result is effected by taking any point of the V trace and revolving it about the H trace into H. The position of (p) may be found by the right triangle construction of Problem 7, but a simpler method is to draw an arc…
Geometry, Descriptive
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