 | Harmon Bay Niver - 1922 - 376 sider
...matter what size it may be, is divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The Equator and the meridian circles are called great circles, because they divide the earth into hemispheres.... | |
 | Frank Moore Colby, Talcott Williams - 1922 - 922 sider
...the circumference of a circle is divided into 360 equal parts, called degrees; each degree into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Further divisions are better represented by decimal fractions. The circle ia also commonly divided... | |
 | Nathaniel Bowditch - 1931 - 866 sider
...supposed to have their circumferences divided into 360 equal parts, cal.ed degrees; each degree is divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds; an arc is measured by the number of degrees, minutes, and seconds that it contains. A sphere is a solid... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c. 
