 | Bourdon (M., Louis Pierre Marie) - Arithmetic - 1858 - 262 pages
...equally distant from a point within, called the centre. In all the scientific works in this country, the circumference is divided into 360 equal parts,...(,); each minute into 60 equal parts, called seconds ("). This is called the sexagesimal division. When the French reformed their system of weights and... | |
 | John Hymers - Logarithms - 1858 - 292 pages
...of being determined geometrically, and furnishes an invariable standard of angular measure) into 90 equal parts called degrees, each degree into 60 equal...minutes, each minute into 60 equal parts called seconds; then an angle is expressed by the number of degrees, minutes, seconds, and decimal parts of a second,... | |
 | 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...minutes, each minute into 60 equal parts called seconds, and so on by a sexigesimal division into thirds, fourths, fifths, &c. An angle is spoken of as containing... | |
 | Benjamin Greenleaf - Geometry - 1862 - 532 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...minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees, minutes, seconds, and decimal parts of a second,... | |
 | 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...minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees, minutes, seconds, and decimal parts of a second,... | |
 | 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, minutes, seconds, and decimal... | |
 | Josiah Lyman - Protractors - 1862 - 92 pages
...the fourth part of a circle; as AFB, Fig. 1. 8. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, &c. 9. The Measure of an angle is the arc intercepted... | |
 | 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. Of... | |
 | William Frothingham Bradbury - Plane trigonometry - 1864 - 324 pages
...from a point within, called the centre ; as ABD E. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees (°), each Degree into 60 equal parts, called minutes ('), and each minute into 60 equal parts, called seconds ( "). 34. The RADIUS of a circle is a line... | |
 | C. Davies - 1867 - 342 pages
...GEOMETRYDefinitions 28 The circumference of a circle is used for the measurement of angles- For this purpose it is divided into 360 equal parts 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... | |
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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. 
