| Olinthus Gregory - Plane trigonometry - 1816 - 244 pages
...of the angle ACB. 10. The circumference of a circle is supposed to be divided, or to be divisible, **into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes** ; each of these into 60 equal parts, called seconds ; and so on, to the minutest possible subdivisions.... | |
| John Bonnycastle - Astronomy - 1816 - 428 pages
...and the equator, we are enabled to judge of the situation of the place with respect to its latitude. **Every circle is supposed to be divided into 360 equal parts, called degrees,** and every degree into sixty equal parts, called minutes; so that, from these considerations, you will... | |
| Thomas Keith - 1817
...measure of the angle » BE, and the arc G n is the measure of the angle ABC. 14. The circumference **of every circle is supposed to be divided into 360...and each minute into 60 equal parts, called seconds.** The angles are measured by the number of degrees cut off from the circle, by the lines which form the... | |
| Robert Gibson - Surveying - 1818 - 478 pages
...right lines, in, and about circles, be supposed to be divided into some assigned number of equal parts. **2. The periphery of every circle is supposed to be divided into 360 equal parts, called degrees** ; and each degree into 60 equal parts, called minutes ; and each minute, into 60 equal parts, called... | |
| Charles Hutton - Mathematics - 1818
...the angle contained by the lines BA and 3D is called the angle BAC BAD or DAB. 67. 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... | |
| Abel Flint - Geometry - 1818 - 168 pages
...divides the Circle into two equal parts, called Semicircles ; as AB or DE. Fig 5. 14. The Circumference **of every Circle is supposed to be divided into 360 equal parts, called Degrees** ; and each Degree into 60 equal parts, called Minutes ; and each Minute into 60 equal parts, called... | |
| Miles Bland - Euclid's Elements - 1819 - 377 pages
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o **equal parts called Degrees ; each degree into 60 equal...each minute into 60 equal parts called Seconds, &c.** This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| Miles Bland - Euclid's Elements - 1819 - 377 pages
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o **equal parts called Degrees ; each degree into 60 equal...each minute into 60 equal parts called Seconds, &c.** This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| William Hawney - Geometry - 1820 - 312 pages
...the measure of the angle DBE aud the arch GH is the measure of the angle ABC. 1*. The circumference **of every circle is supposed to be divided into 360...and each minute into 60 equal parts, called seconds.** Angles are measured by the number of degrees cut oft'from the circle, by the lines which form the angles.... | |
| Bewick Bridge - Algebra - 1821 - 227 pages
...For the purpose of exhibiting arithmetically the magnitude of angles, the whole circumference of the **circle is supposed to be divided into 360 equal parts,...degrees; each degree into 60 equal parts, called minutes;** each minute into 60 equal parts, called seconds; &c. &c. And since arcs are the measures of angles,... | |
| |