 | Benjamin Greenleaf - Arithmetic - 1839 - 356 pages
...contained by the lines B, A and A, D is called the angle B, A, D, or D, A, B. 56. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds ; and so on. Hence a semicircle contains... | |
 | Jeremiah Day - Geometry - 1839 - 434 pages
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters... | |
 | Charles Davies - Geometrical drawing - 1840 - 264 pages
...circle. 7. 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 is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes,... | |
 | W. F. Walker - Arithmetic - 1841 - 246 pages
...C. 0 1— 60. g. 1 = 60 = 3600. C. 1 = 30 = 1800 = 108000. 1 = 12 — 360 = 21600 = 1296000. . This measure is used in estimating latitude and longitude,...also in measuring the motions of the heavenly bodies. XIII. TIME. The denominations of Time are the year, the month, the week, the day, the hour, the minute,... | |
 | Benjamin Greenleaf - Arithmetic - 1841 - 334 pages
...contained by the lines B, A and A, D is called the angle B, A, D, or D, A, B. 56. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds ; and so on. Hence u semicircle contains... | |
 | Charles Guilford Burnham - Arithmetic - 1841 - 324 pages
...centre ; and it divides the circle into two equal parts, called semi-circles. 14. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 0O equal parts, called minutes; and each minute into 60 equal parts, called seconds;... | |
 | William Grier - Mechanical engineering - 1842 - 320 pages
...AO that which stands at the angular point is read in the middle. Thus, DAE. 57. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains... | |
 | Joseph Gwilt - Architects - 1842 - 1114 pages
...abstract relations which connect it with geodisic operations. 1 034. We have already observed that every circle is supposed to be divided into 360 equal parts, called degrees, and that each degree is subdivided into 60 minutes, these minutes each into 6O seconds, and so on.... | |
 | Charles DAVIES (LL.D.) - Arithmetic - 1843 - 348 pages
...Ida. 26m. 58sec. 6. In 5927040 minutes, how many weeks ? Ans. 588. CIRCULAR MEASURE OR MOTION. § 7O. Circular measure is used in estimating latitude and...to be divided into 360 equal parts, called degrees. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes - - 1 degree, - - °. 30 degrees - - 1 sign,... | |
 | 1844 - 636 pages
...The brazen meridian is the circle in which the anifi- L cial globe turns, divided into 360 degree*. Every circle is supposed to be divided into 360 equal parts, called degrees, each degree into 60 equal parts, called minute*, \ each minute into 60 equal parts, called seconds, &c. ; a degree... | |
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The circumference of every circle is supposed to be divided into 360 equal... 
