Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 117
riangle H inches oneach side. The prism is lyingon one of its three faces on H,and inclined toward the ver-tical plane at an angle of 30°.The plan may be drawn atonce, because the width willbe H inches, and the top edgewill be projected half waybetween the other two. Thelength of the prism will… … rrue Height on Horizontal Plane 90
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
