| Robert Gibson - 1806 - 452 páginas
...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 - 518 páginas
...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 - 328 páginas
...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 - 168 páginas
...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 - 191 páginas
...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 - 533 páginas
...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 - 538 páginas
...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 - 125 páginas
...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 - 518 páginas
...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 - 125 páginas
...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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