 | Robert Gibson - Surveying - 1818 - 502 pages
...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 seconds ; &c. 3. Any part... | |
 | William Nicholson - Natural history - 1819 - 414 pages
...otherwise called a periphery ; the boundary of a right lined figure being expressed by the term perimeter. The circumference of every circle is supposed to be divided into 360 degrees. The angle at the circumference of a circle is double that at the centre. For the ratio of... | |
 | William Hawney - Geometry - 1820 - 336 pages
...thus the arch I)E is 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 equal parts, called degrees ; each degree into 60 equal parts, called minutes : and each minute into 60 equal parts, called seconds.... | |
 | Thomas Simpson - Algebra - 1821 - 426 pages
...and about the circle, be supposed 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 seconds, or second minutes,... | |
 | Euclid, Robert Simson - Geometry - 1821 - 514 pages
...arch AC is called the measure of the angle ABC. II. The circumference of a circle is supposed to lie divided into 360 equal parts called degrees; and each degree into 60 equal ' ^ parts called minutes, and each minute into 60 equal parts called seconds, &c. And as many... | |
 | Bewick Bridge - Algebra - 1821 - 648 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, called degrees; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds; &c.... | |
 | Edward Bruce (bookseller.) - 1821 - 418 pages
...the centre. / 1. A less circle divides a globe into two unequal parts. Every circle, great or small, is supposed to be divided into 360 equal parts, called degrees; and every degree is subdivided into 60 minutes. Degrees are marked °, and minutes'. Thus,—4 deg. 15... | |
 | Charles Hutton - Mathematics - 1822 - 616 pages
...the angle BAD or DAB. 67. The circumference ef every circle is supposed to be divided into 360 equnl parts, called Degrees : and each degree into 60 Minutes,...60 Seconds, and so on. Hence a semicircle contains ICO degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of an; circle contained... | |
 | Anthony Nesbit, W. Little - Measurement - 1822 - 916 pages
...part of a circle, as ADC. " *fi. A sector is any part of a circle bounded by an arc sad two radii. 47. 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,... | |
 | Joseph Emerson Worcester - Atlases - 1822 - 354 pages
...ecli^tc, and the two colurvs. equal parts. These are four, the two tropics, and (he two polar circles. 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 00 equal parts, called seconds.... | |
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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 seconds ; and these into thirds, &c. 
