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| Books | Books |
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| Books | Books |
 ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and...  The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ... - Page 64 by Benjamin Donne - 1775 - 159 pages Full view -
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