| 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... | |
| |