Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 54
ions will be parallel, to each other. (2) A horizontal line on an inclined plane must be parallel to any other hori-zontal line on the same plane and therefore parallel to the H.T. of that plane. (3) A line on an oblique plane must have its V.T., if it has one, in the V.T.of that oblique plane. (4)… … Fig. 51. Thus the plan ab in Fig. 49 is made parallel to ST to represent a horizontalline in the plane of which ST is the H.T., and when AB is produced it will meetthe y.V. in a point cc in the V.T. of the plane RST in which it Hes. and the ele-vation ab of the horizontal line can then be…
Geometry, Descriptive
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