The American practical navigator : being an epitome of navigation and nautical astronomy (1888)
Bowditch, Nathaniel, 1773-1838, United States. Navy Dept. Bureau of Navigation, Cooper, Philip Henry, 1844-1912 · Washington : Govt. Print. Off. · leaf 679
es, as ACDB. If the opposite sides are parallel, they arecaWeA parallelograms. Thus, if AC be parallel to BD, and AB parallel to CD, the figure ACDBis a parallelogram. A parallelogram having all its sides equal, and its angles right, is called asquare, as B. When the angles are right, and the… … A
Navigation · Nautical astronomy
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