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 32
and the H.T. of the ray through]^ and the V.T.of the ray through B in case (iii). Study of cases (iv) and (v) will show the obvious fact that a plane figure,parallel to a plane, will cast its real shape, and size also, for its shadow, on that SHADOWS OF PLANE FIGURES 23 plane to which it is… … Fir.. i8. Further illustrations are shown in Fii^s. ig, 20 and 21, dealing with plant-figures parallel to the H.P., but casting only part of the shadow, in each case,on the H.P. In Fig. 19 a square figure, parallel to the H.P., touches the \.P. at one corner.First find the H.T. of the ray through A…
Geometry, Descriptive
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