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 36
t 45° to the H.P. is marked by the dotted line hh, and the elevation length for a2 line at 30° to the V.P. is obtained and marked ee. This line is then movedby an arc into its proper position, namely, between the levels proper for a 2 lineat 45° to the H.P., i.e., between XY and the parallel ////.… … Fio. 24. be limited to the space between XY and the parallel dd due to the 30 angle, aperpendicular from the free end, that is, the upper end of the elevation, drawn tothis parallel dd, will decide its plan. At (ii) the same result is arrived at by obtaining the plan length, marked pp,and moving it…
Geometry, Descriptive
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