Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 67
on-taining the arcs. Problem 79 is an illustration of the latter kind. The sides ofth -polygon form the diameters of the semicircles, the centre each side being the centre of the circle containing thearc. If these slyc^ were produced, they would intersect eachother. 78. To construct a foiled… … Fig. 116. 54 GEOMETRICAL DRAWING AND DESIGN. 79. To construct a foiled figure about any regular polygon, havingadjacent diameters. For example, a pentagon. Tlie Cinquefoil. — Bisecteach side of the pentagonin the points C, D, E, F, andG. With each of these pointsas centres, and with a radiusequal…
Geometrical drawing · Design · Drawing
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