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 33
Fig. 13. Fig. 12. The Equator is agreat circle formed by theintersection with the Earthssurface of a plane perpendic-ular to its axis. The Equa-tor is equidistant from thepoles. Every point of theEquator is 90 degrees fromthe poles. The great circleE Q is the Equator. (Fig. 13.)16.—*What is…
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