 | Charles Hutton - 1818 - 646 pages
...the middle. Thus 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... | |
 | Samuel Butler (bp. of Lichfield and Coventry.) - 1818 - 376 pages
...step, or degree, and applied the same mode of division to circles in general. Each degree is subdivided into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds, are marked thus °, ', "; thus 23° 40' 52" means 23 degrees, 40 minutes, 52 seconds. The half of 360 is... | |
 | Robert Gibson - 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... | |
 | William Nicholson - 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 - 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...equal parts, called degrees ; each degree into 60 equal parts, called minutes : and each minute into 60 equal parts, called seconds. Angles are measured... | |
 | Bewick Bridge - 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. &c. And since arcs... | |
 | Thomas Simpson - 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... | |
 | Sidney Edwards Morse - 1822 - 706 pages
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...parts, called degrees ; each degree into 60 minutes ; each minute into GO seconds. An arc of a circle is part of its circumference. All angles are measured... | |
 | Sidney Edwards Morse - 1822 - 706 pages
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of a circle is part of its circumference. All angles are measured... | |
 | Anthony Nesbit, W. Little - 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...equal parts, called degrees ; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds, &c. 48. The arc of... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc. 
