 | Thomas Holliday - Surveying - 1838 - 404 pages
...fig. 16, A—C. 4. The diameter is the greatest straight line in a circle. 5. The circumference of a circle is supposed to be divided into 360 equal parts called degrees. The face of the theodolite, compass, circumferentor, and protractor, are of the same figure as the... | |
 | Benjamin Greenleaf - Arithmetic - 1839 - 356 pages
...middle. Thus, the angle 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 - Surveying - 1839 - 376 pages
...accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the 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. PLANE TRIGONOMETRY \ As the circumference of a... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the 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. PLANE TRIGONOMETRY. V As the circumference of... | |
 | Benjamin Greenleaf - Arithmetic - 1841 - 334 pages
...middle. Thus, the angle 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
...passing through the 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;... | |
 | Charles Davies - Navigation - 1835 - 388 pages
...accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the 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. PLANE TR16ONOMETRY. As the circumference of a... | |
 | William Grier - Mechanical engineering - 1842 - 320 pages
...on the two sides, 5 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.... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees... 
