 | Richard Turner - 1787 - 88 pages
...is) to find how many Miles it is round. A Line going round our Globe, is fuppofed by Mathematicians to be divided into 360 equal Parts, called Degrees ; and each of thofe Parts are fuppofed to be divided into 60 other equal Parts, called Minutes. Now our Countryman,... | |
 | 1801 - 446 pages
...the two sides, that, which stands at the angular point, is rend in the middle. C 56. The 39° 5 6. 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 do seconds, and so on. Hence a semicircle contains 1 80 degrees,... | |
 | Abel Flint - 1804 - 226 pages
...the Centre ; and it divides the Circle into two equal parts, called Semicircles ; as AB or DE. 14. The. Circumference of every Circle is supposed to...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 ;... | |
 | David Steel - 1805 - 392 pages
...centre to the circumference of a circle, is called a Radius. All the radii of the same circle are equal. The circumference of every circle is supposed to be divided into 360 parts, called degrees; each degree into 60 equal parts, called minutei; and each minute into 60 equal... | |
 | Robert Gibson - 1806 - 486 pages
...circumference into two equal parts called semicircles ; and is double the radius, as AB or DE. fig. 8. • 18. 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... | |
 | John Bonnycastle - 1806 - 464 pages
...by an arc of a circle contained between its two legs, and having the angular point for its centre. Every 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... | |
 | Thomas Simpson - 1810 - 168 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... | |
 | Thomas Keith - 1810 - 478 pages
...thus the arc *c is the measure of the angle aBC and the arc DE is the measure of the angle ABC. (H) The circumference of every 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. The... | |
 | Euclid - 1810 - 554 pages
...meeting BA, BC in A, C; the arch AC is called the measure of the angle ABC. II. The circumference of a 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.... | |
 | Richard Turner - 1810 - 384 pages
...is) to find how many miles it is round. A line going round our globe, is fuppofed by .mathematicians to be divided into 360 equal parts, called degrees; and each, of thefe .parts is fuppofed to be divided into 60 other equal parts, called minutes. Now our countryman,... | |
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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. 
