 | Robert Gibson - 1818 - 502 σελίδες
...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... | |
 | Charles Hutton - 1818 - 646 σελίδες
...before observed in Geom. Def. 57) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def. 58, Geom.) is an arc of any... | |
 | William Nicholson - 1819 - 414 σελίδες
...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 σελίδες
...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 - 1821 - 426 σελίδες
...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 - 1821 - 514 σελίδες
...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 - 1821 - 648 σελίδες
...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 σελίδες
...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 - 1822 - 616 σελίδες
...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... | |
 | Sidney Edwards Morse - 1822 - 706 σελίδες
...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 divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of a circle is part of its circumference.... | |
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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. 
