 | Robert Gibson - 1806 - 486 σελίδες
...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...and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c. these parts being greater or less as the radius is. 19. A chord... | |
 | Robert Simson - 1806 - 546 σελίδες
...called the measure of th« angle ABC. n. The circumference of a circle is supposed to be divided info 360 equal parts called degrees, and each degree into...and each minute into 60 equal parts called seconds, i: >.. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees,... | |
 | John Hamilton Moore - 1807 - 586 σελίδες
...circles, whether great or fmall, are actually, or fuppofed to have, their circumference divided 11110360 equal parts, called degrees, and each degree into...minutes, and each minute into 60 equal parts, called féconds, and fu on into thirds, fourths, &c. All angles are msafurcd by an arch of a circle, defcribed... | |
 | Abel Flint - 1808 - 190 σελίδες
...equal parts, called Semicircles; asAB or DE. Fig. 5. 14. The Circumference of every Circle is supposcfl to be divided into 360 equal parts called Degrees...and each Minute into 60 equal parts, called Seconds ;. and these into Thirds, 8tc. Note. Since all Circles are divided into the same number of Degrees,... | |
 | Benjamin Workman - 1809 - 218 σελίδες
...unequally. LeflVr circles are coai* monly parallel to fome great circle7. Every circle is fuppofed to be divided into 360 equal parts, called Degrees...and each degree into 60 equal parts, called Minutes ; each minute in 60 Seconds, £c. 8. A degree of a great circle, on the earth, contains 60 geographical... | |
 | James Ferguson - 1809 - 574 σελίδες
...suppose to be divided into 12 equal parts, called signs ; each sign into 30 equal parts, called degrees; each degree into 60 equal parts, called minutes; and each minute into 60 into 60 equal parts, called seconds : so that a second Plate I. is the 60th part of a minute ; a minute... | |
 | John Ewing - 1809 - 672 σελίδες
...circle, whether large or small, is supposed to be divided into 360 equal parts, which are called degrees, each degree into 60 equal parts called minutes, and each minute into 60 seconds, and so on in a sixagesimal division as far as you please. If the earth be supposed to turn... | |
 | Thomas Simpson - 1810 - 168 σελίδες
...requisite that the peripheries of circles, but also certain right lines in and about the circle be supposed divided into some assigned number of equal parts....and each minute into 60 equal parts, called seconds, or second minutes, &c. 3. Any part AB (fig. 1.) of t!u- periphery of the circle is called an arch,... | |
 | Euclid - 1810 - 554 σελίδες
...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...each minute into 60 equal parts called seconds, &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,... | |
 | Thomas Simpson - 1810 - 152 σελίδες
...some assigned number of equal parts. 2. The periphery of every circle is supposed to be di-< vided into 360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called seconds, or second minutes, &c. 3. Any part AB (fig. 1.) of the periphery of the circle is called an arch, and... | |
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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. 
