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 45
In Fig. 36 it will be seen necessary to cast the shadow of the apex of the pyra-mid on to the H.P. beyond the AF line first, in order to draw from that point, 36 DESCRIPTIVE GEOMETRY on the H.P. the Unes forming the contour for that part of the shadow falhng uponthe H.P. in front of the V.P. (see… … Fig. 36. Fig. 37. in plan, have no light falling on them, they are shaded. They are said to be inshade, as distinguished from the cast shadow just found. In the case of the coneat Fig. 37, the part in shade is determined by the radii that are perpendicular tothe tangent hnes serving as contour or…
Geometry, Descriptive
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