Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 220
shade and shadowof a polyhedron, none ofw hose faces are parallel orperpendicular to the co=or=dinate planes. Fig 20 shows a poly-hedron in such a positionand of such a shape thatnone of its faces are per-]Hiidicular or parallel to theco-ordinate planes. It isimpossible, therefore, to apply to this… … 182 SHADES AND SHADOWS 13 FIG* 21 Under these circa//istances ■tee must cast the s/ia</,>/rs of allthe h<nui(l<inj chjes of the ohject. Some of these lines of shadowwill form a polygon, the others will fall inside this polygon. Theedges of the object whose shadows form the hounding…
Architecture · Building · Carpentry
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