 | Anthony Nesbit - Measurement - 1859 - 494 pages
...and angles which principally depend on the properties of the circle, and circular arcs. Every circle is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds, and so on by a sexigesimal division into thirds, fourths,... | |
 | Benjamin Greenleaf - Geometry - 1861 - 638 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts culled seconds ; then an angle is expressed by the number of degrees,... | |
 | Benjamin Greenleaf - Geometry - 1862 - 518 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
 | Olinthus Gregory - 1863 - 482 pages
...(See the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible into. 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions.... | |
 | C. Davies - 1867 - 342 pages
...semicircumference ; and ono quarter of the circumference, as AC, is called a quadrant BC D BC B GEOMETRYDefinitions 28 The circumference of a circle is used for the measurement...called degrees, each degree into 60 equal parts called ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked... | |
 | George Augustus Walton, Electa Nobles Lincoln Walton - Arithmetic - 1869 - 350 pages
...plane surface ; circle ; circumference ; arc ; radius ; diameter. 33O. The circumference of a circle is divided into 360 equal parts called degrees, each degree into 60 minutes, and each minute into 60 seconds. These are the units of CIRCULAR- MEASURE. TABLE. 60 seconds... | |
 | Benjamin Greenleaf - 1869 - 516 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
 | Hiram Mattison - 1872 - 264 pages
...sometimes called radiations or itldianr-6. All circles, whether great or small, are supposed to be divided into 360 equal parts, called degrees / each degree into 60 equal paits, called minutes; and each minute into 60 equal parts, called seconds. They are marked respectively... | |
 | George Augustus Walton - Arithmetic - 1873 - 348 pages
...plane surface ; circle ; circumference ; arc ; radius ; diameter. 330. The circumference of a circle is divided into 360 equal parts called degrees, each degree into 60 minutes, and each minute into 60 seconds. These are the units of CIRCULAR MEASURE. TABLE. 60 seconds... | |
 | Benjamin Greenleaf - Trigonometry - 1876 - 204 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
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For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 
