Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 184
GEOMETRICAL DEFINITIONS 173 … Fig. 87 The arc cumference. Line A B, Fig. 87, is a radius. Allthe radii of a circle are equal. The diameter of a circle is a straight line drawnthrough the center andjoining two points in thecircumference. Line CDj Fig. 87, is a diameter.A diameter is equal totwo radii. i| An arc of a circle is…
Mechanical drawing
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