Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 215
of the point a, situated as in Fig. 5, that is, nearer the Yplane than the H. The actual shadow would in this case fall onY, but it is sometimes necessary to find its imaginary shadow on H.The method of determining this is similar to that explained inconnection with Fig. 5. Draw E.^ until it meets… … FIGy
Architecture · Building · Carpentry
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