Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 71
he entire circum-ference. In order that the size of an angle or arc may be stated with-out saying that it is a certainfraction of a circumference, thecircumference is divided into 360equal parts called degrees, Fig.67. Thus, it may be said thata certain angle contains 45 de-grees, i.e., it is ^W =1… … 52 MECHANICAL DRAWING 39 SOLIDS A solid has three dimensions—length, breadth, and thickness.The most common forms of sohds are folyedrons, cylinders, cones,and spheres. POLYEDRONS A polyedron is a sohd bounded by planes. The bounding planesare called faces and their intersections are called edges.…
Architecture · Building
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