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 - 426 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, Plane - 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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