 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.  An Elementary Geometry and Trigonometry - Page 11by William Frothingham Bradbury - 1873 - 238 pagesFull view - About this book
 | George Albert Wentworth - 1894 - 318 pages
...minutes = 1 degree (°). 90 degrees = 1 right angle. 360 degrees = 1 revolution. The circumference of a circle is divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. The larger the circle, the greater the length of 1 degree. 1... | |
 | George Washington Hull - Arithmetic - 1895 - 408 pages
...is a quadrant. An Arc is any part of a circumference. For convenience of measuring the circumference is divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called TABLE. 60 seconds (") = 1 minute, '. 60 minutes = 1 degree,... | |
 | Edward Brooks - Arithmetic - 1895 - 424 pages
...the circumference is called a quadrant. 241. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 242. Any angle having its vertex at the centre is... | |
 | Edward Brooks - Arithmetic - 1895 - 248 pages
...distant from a point within called the centre. 3. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 4. Any angle at the centre, as BCD, is measured by... | |
 | George D. Pettee - Geometry, Modern - 1896 - 272 pages
....-.theirlimits=J 175. Sen. Both the circumference of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each...60 equal parts called minutes, and each minute into CO equal parts called seconds. Since central angles vary as their intercepted arcs, any central angle... | |
 | George Albert Wentworth - Arithmetic - 1896 - 490 pages
...by OA. The angle A OB is such a part of the angular magnitude about 0 as AB is of the circumference. The circumference of every circle is divided into 360 equal parts, called degrees (arc-degrees), and corres.nding to every one of these equal parts is an angle at the centre of the... | |
 | Charles Edward White - Arithmetic - 1897 - 312 pages
...line through the centre of a circle terminating at the circumference is A circle. the Diameter. D 143. The circumference of every circle is divided into...360 equal parts called Degrees, each degree into 60 parts called Minutes, and each minute into 60 parts called Seconds. 144. An Angle is the difference... | |
 | George Albert Wentworth, George Anthony Hill - Arithmetic - 1897 - 476 pages
...minutes = 1 degree (°). 90 degrees — 1 right angle. 360 degrees = 1 revolution. The circumference of a circle is divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. The larger the circle, the greater the length of 1 degree. 1... | |
 | George Albert Wentworth - Arithmetic - 1897 - 396 pages
...by OA. The angle A OB is such a part of the angular magnitude about O as AB is of the circumference. The circumference of every circle is divided into 360 equal parts, called degrees (arc-degrees), and corresponding to every one of these equal parts is an angle at the centre of the... | |
 | George Albert Wentworth - 1898 - 424 pages
...(LI. The angle A OB is such a part of the angular magnitude about 0 as AB is of the circumference. The circumference of every circle is divided into 360 equal parts, called degrees (arc-degrees), and corresponding to every one of these equal parts is an angle at the centre of the... | |
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