Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 49
Fi G 47 Fie.46. the given circle, with radii extending to e and f,describe circles which will divide the given circleinto three parts, bearing to each other the sameproportion as the divisions on AD, which are as1, 2 and 3. In like manner circles may be dividedin any given ratio by concentric…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
