Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 54
Fig. 68. •LINE CONTAINED IN PLiNE 43 … Fig. 69. the V trace of the required plane. Its traces are drawn- parallel to i and ^- Problem 36.—To find the lines of a given plane which make a given angle with H or V.Note.—The angle which a line of a plane makes with H or V cannot be greater than the angle which the plane itself makes with H…
Geometry, Descriptive
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