Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 63
en plane, A the given line and the auxiliary plane 4 istaken perpendicular to V.The line of intersection of2 and 4 meets the givenline A in the requiredpoint M. When the aux-iliary plane is taken perpen-dicular to H or V, then onetrace of the plane and thecorresponding projectionsof the given line… … Fig. 95. INTERSECTIONS 53 Special Cases.—If the given line is in a position nearlyparallel to H and V, it may happen that the auxiliaryplane will not have its traces intersecting the correspondingtraces of the given plane withinthe limits of the drawing. In thiscase the line of intersection mustbe…
Geometry, Descriptive
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