Smith, David Eugene, 1860-1944 · Boston, New York [etc.] Ginn and Company · leaf 252
A Quadrant of the Sixteenth CenturyDe Judaeiss Do quadrante geometrico, Niirnberg, 1594 … i:;« The Quadrant used for DistancesBettinuss Apiaria universae philosophiae mathematicae, Bologna, 1645 242 THE TEACHING OF GEOMETRY The quadrant finally developed into the octant, asshown in the following illustration from Hoffmann, andthis in turn developed into the sextant, which is now usedby…
Geometry
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