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 - Arithmetic - 1898 - 424 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 corresponding to every one of these equal parts is an angle at the centre of the... | |
| George Albert Wentworth - Arithmetic - 1898 - 424 pages
...by (M. 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... | |
| International Correspondence Schools - Mining engineering - 1900 - 728 pages
...circumference being at the vertex of the angle. For measuring angles, the circumference is divided into :i60 **equal parts. called degrees; each degree into 60 equal parts called minutes.** A quadrant is one-fourth the circumference of a circle, or 90°. The complement of an arc is 90° minus... | |
| John Marvin Colaw, John Kelley Elkwood - Arithmetic - 1900 - 450 pages
...formed. Thus, the arc DE is the measure of the angle DCE. 337. In measuring angles, the circumference **is divided into 360 equal parts, called degrees ; each degree into 60** parts, called minutes ; and each minute into 60 parts, called seconds. 1. The length of a degree varies.... | |
| Charles Edward White - Arithmetic - 1901 - 472 pages
...line through the centre of a circle terminating at the circumference is the * cime. Diameter. 203. **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. 204. An Angle is the difference... | |
| American School (Lansing, Ill.) - Algebra - 1902 - 80 pages
...degrees is measured by ^ of the circumference. 185. For accurate measurement each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts** ('ailed seconds. The symbols of degrees, minutes and seconds are °, ', ", respectively. To express... | |
| American School (Chicago, Ill.) - Engineering - 1903 - 428 pages
...degrees is measured by ^ of the circumference. 185. For accurate measurement each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts called seconds.** The symbols of degrees, minutes and seconds are °, ', ", respectively. To express 23 degrees, 47 minutes... | |
| Walter Nelson Bush, John Bernard Clarke - Geometry - 1905 - 378 pages
...theorem may be stated thus : A central angle is measured by its intercepted arc. The circumference **is divided into 360 equal parts, called degrees ;...and each minute into 60 equal parts, called seconds.** For brevity, an angle measured by an arc of 1° is called an angle of 1° ; etc. NOTE. — This division... | |
| John Marvin Colaw, Frank Williamson Duke - Arithmetic - 1906 - 408 pages
...passing around the earth on its surface ? 444. In measuring circumferences, each degree is divided in **60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.** In this measure, degrees, minutes, and seconds are written with symbols. Thus, 3 degrees, 25 minutes,... | |
| Sidney Luxton Loney - Hydrostatics - 1905 - 332 pages
...inconvenient unit of measurement on account of its size. We therefore subdivide a right angle into 90 **equal parts called degrees, each degree into 60 equal...and each minute into 60 equal parts called seconds.** The symbols used for a degree, a minute, and a second are 1°, 1', and 1". Thus 10° 11' 12" means... | |
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