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 80
191. THEOREM VII. Tivo iriangles (abc, def) are congruous, when thethree fides in the one, art equal to the three fides inthe other, each to each. Dem. Apply the point d to a, and the line be to ab. Now as de = ab (by fup.); therefore the point e falls on 3. On A, with the radius ac defcribe an…
Navigation · Nautical astronomy · Fortification
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