Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 192
of a sphere is the straight line drawnfrom the center to the bounding surface. All radiiare equal. The diameter of a sphere is a straight line drawnthrough the center and terminating in the sphericalsurface. The diameter is equal to two radii. CHAPTER XVI GEOMETRICAL PROBLEMS In the figures…
Mechanical drawing
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