 | Charles Davies - Arithmetic - 1846 - 378 pages
...required ; and so of others. DIVISION OF THE CIRC1E MEASURE OF TIME. 40. 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. For astronomical purposes, the circumference of... | |
 | Anthony Nesbit - Plane trigonometry - 1847 - 492 pages
...a certain 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... | |
 | John Bonnycastle - Geometry - 1848 - 320 pages
...point being always to be read in the middle. CD B *47. 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 so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two... | |
 | Rufus Putnam - Arithmetic - 1849 - 276 pages
...diameter and a semicircle ; as, the surface FHK. 45. 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. Hence, a semicircle contains 180 degrees, and... | |
 | Daniel Adams - Arithmetic - 1849 - 142 pages
...sixth part of a circle. Thus, AFB, BFC, and CFD, are sextants. 10. The circumference of every circle is divided into 360 equal parts, called Degrees; each degree into 60 equal parts, called Minutes ; and each minute into 60 equal parts, called Seconds. 11. Degrees, minutes, and seconds, are marked... | |
 | Charles Davies - Arithmetic - 1850 - 412 pages
...required ; and so of others. DIVISION OF THE CIRCLE MEASURE OF TIME. 40. 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. For astronomical purposes, the circumference of... | |
 | Charles Davies - Geometry - 1850 - 238 pages
...Definitions. 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 minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds are marked thus... | |
 | Charles Davies - Geometry - 1850 - 218 pages
...Definitions. 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 minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds are marked thus... | |
 | Daniel Adams - Measurement - 1850 - 144 pages
...part of a circle. Thus, AFB, BFC, and CJRD, are sextants. 10. The circumference of every circle is divided into 360 equal parts, called Degrees ; each degree into 60 equal parts, called Minutes ; and each minute into 60 equal parts, called Seconds. 11. Degrees, minutes, and seconds, are marked... | |
 | Francis Lieber - Encyclopedias and dictionaries - 1851 - 630 pages
...the circle in which the artificial globe turns, divided into 360 degrees. Every circle is supposed to be divided into 360 equal parts, called degrees, each...into 60 equal parts, called minutes, each minute into 60 equal parts, called seconds, &c. ; a degree is therefore only a relative idea, and not an absolute... | |
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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. 
