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 Consider, for instance, joint 6, the polygon for which is a gij a. Notice that the corresponding letters AGIJA, on the truss, follow one another around the joint in such a manner that in passing from one to another we move in a direction opposite to that...  Arithmetic, algebra, logarithms, geometry and trigonometry, elementary ... - Σελίδα 529 των International Correspondence Schools - 1899 Πλήρης προβολή -
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