Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 30
6.—*What is an Arc? … Fig. 4. A part of the circumfer-ence of a circle is called anarc. The curved line A B (Fig.5) is an arc of the circleABC A. Fig. 5. 7.—*What is Complement of an Arc or Angle? The difference between an arc or angle and 90°is called complement to thatarc or angle. The arc C B (Fig. 6) isthe…
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