Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 259
ct the shadow of avertical line on an in=>clined plane parallel tothe ground line. It makes an angle withthe horizontal equal to theangle which the given plane makes with IL Given the vertical projection of a vertical line a?)^ its lowerend resting on a plane parallel to the ground line and… … of the 45^^ line drawn through the end of the line «\ 88. Problem XXI. To construct the shadow on a co=ordl=nate plane of a plane which is parallel to it. 208 SHADES AND SHADOWS 39 (1) It will be of tlie same form as that of the given surface. (2) It will be of the same area. If the plane surface…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
