The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 71
ce of a circte vrto two, four, eight, fixteen, thirtytwo &c. equal parts. •$X~ v : Operation, ift. A diameter ab divides the <? •\#*r-~JLS _..$... circle into two equal parts. ttf 2d- A diameter d e perpendicular to ab, divides■ the circumference into four equal parts. 3d. On a, d, b,… … 4th. On aand the centre, diameters being drawn, divides it intofixteen equal parts, £sVFor at each operation, the intercepted arcs are bifecled. 563. PROBLEM XIII. To defcribe a circle, whofe circumference jhall pafs thro three given pointsA, Bj c, provided they do not lie in one right line.…
Navigation · Nautical astronomy · Fortification
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