 | Alfred Newsom Niblett - 1861 - 204 pages
...find the area of a sector of a circle. DEFINITIONS. A quadrant is the fourth part of a circle, as EC. The circumference of every circle is supposed to be...300 equal parts, called degrees; each degree into 00 equal parts, called minutes; and each minute into 00 equal parts, called seconds. The arc of a quadrant... | |
 | Josiah Lyman - Protractors - 1862 - 92 pages
...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 - 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,... | |
 | 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,... | |
 | Olinthus Gregory - 1863 - 482 pages
...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.... | |
 | William Frothingham Bradbury - Plane trigonometry - 1864 - 324 pages
...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 drawn from... | |
 | Samuel Maunder - Encyclopedias and dictionaries - 1866 - 884 pages
...я quadrant, ur qunrtcr of a circle, IM a sector baring a quarter of the circumference for Its arc. The, circumference of every circle Is supposed to be divided Into 300 equal part*, culled (Ugreee, each degree Into 60 ntiuutcê, and each minute Into 60 etci*nds : heuce a semicircle... | |
 | Asa Smith - 1868 - 86 pages
...— 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 around... | |
 | 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,... | |
 | Anthony Nesbit - 1870 - 578 pages
...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 drawn... | |
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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. 
