| Euclides - 1860
...a circle is accordingly supposed to be divided into 360 equal parts, called degrees ; each of these **into 60 equal parts, called minutes ; each of these into 60 equal parts, called seconds ; and so on.** If, therefore, a circle be described from the angular point as a centre, the number of degrees, minutes,... | |
| Josiah Lyman - 1862 - 77 páginas
...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... | |
| Benjamin Greenleaf - 1862 - 490 páginas
...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, minutes,... | |
| 1864
...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
...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... | |
| Asa Smith - 1868 - 79 páginas
...— The boundary of a circle. The circumference of every circle ¡в supposed to be divided into and **equal parts, called degrees ; each degree into 60 equal parts, called minutes** ; and each minute into 60 equal parts, called seconds. Circumpolar Start.— Those stars which revolve... | |
| Benjamin Greenleaf - 1869 - 382 páginas
...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, minutes,... | |
| William Burness - 1870
...point within it, called the centre. 39. 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. 40. The diameter of a circle is a right line... | |
| Enoch Lewis - 1872
...supplement. Thus BHD is the supplement of AB. 10. The circumference of every circle is supposed to be divided **into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** eafth minute into 60 equal parts, called seconds, &c. Degrees, minutes and seconds are designated thus,... | |
| William Frothingham Bradbury - 1872 - 238 páginas
...of methods of computing plane angles and triangles. 17. The circumference of every circle is dividad **into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes** ( ' ), and each minute into 60 equal parts, called seconds ( " ). 18. As angles at the centre valy... | |
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