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 47
on the surface of the cyhnder. Freehandcurves will then mark the outline of the shadow cast. Notice that point 2 is theone that casts a shadow on the outside generator whose plan is C. In Fig. 41 a group consisting of a pyramid standing on a square block is repre-sented. The shadow caught by the… … Fig. edges they are on, to az and ^2. From ^2 the shadow of the slant edge of the pyra-mid continues on the H.P., parallel to 2 on the upper surface of the block, untilit reaches the XY, when it runs up the V.P. to the shadow of the apex, on the V.P.,and from ao a line on the V.P. to the shadow of…
Geometry, Descriptive
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