| Euclid - 1781 - 520 sider
...co-fucant of the angle rtionai between the tan.ngles HKB, ABC will \.E arc right ; therefore rill• **360 equal parts called degrees, and each degree into...minutes, and each minute into 60 equal parts called** feconds, &c- And as many degrees, minutes, feconds, &c. as are contained in any arch, of fo many degref.s... | |
| John Hamilton Moore - 1791 - 296 sider
...the ßooth Part of the Circumference of any Circle. All Circles, whether great or fmall, are divided **into 360 equal Parts, called Degrees ; and each Degree...and each Minute into 60 equal Parts called Seconds,** &c. A Semicircle is 180 Degrees, and a Quadrant contains 90 Degrees. A Right Angle contains 90 Degrees... | |
| John McGregor (teacher of mathematics.) - 1792 - 431 sider
...divided into right-angled and oblique-angled trigonometry. The circumference of any circle, is divided **into 360 equal parts, called degrees, and each degree...minutes, and each minute into 60 equal parts, called** féconds, and fo on. JVi/f, Degrees are frequently marked °, and minutes '. Thus, 30 degrees, 14 minutes,... | |
| Robert Gibson - 1795 - 319 sider
...double the Radius, as AB cr DE. Fig. 8. 1 8. The Circumference of every Circle is fuppofed to be Divided **into 360 equal Parts called Degrees, and each Degree...and each Minute into 60 equal Parts called Seconds,** and thefe into Thirds, Fourths, &c. thefe Parts being greater or lefs as the Radius is. 19. A Chord... | |
| William Taylor - 1800 - 519 sider
...called the Radius. 8. The circumference of every circle is divided into 360 equal parts called Degrees ; **each degree into 60 equal parts, called Minutes ;...and each minute into 60 equal parts, called Seconds,** &c. Any part of the the circumference is called an Arch. 9. The Chord of an arch, is a right line joining... | |
| Abel Flint - 1804 - 168 sider
...called Semicircles ; as AB or DE. 14. The. Circumference of every Circle is supposed to be Divided **into 360 equal parts, called Degrees ; and each Degree...and each Minute into 60 equal parts, called Seconds** ; jktl these into Thirds, &c. Ifote. .-Since all Circles are divided into the same number of Degrees,... | |
| Robert Simson - 1804
...is called the meafure of the angle ABC. II. The circumference of a circle is fuppofed to be divided **into 360 equal parts called degrees, and each degree...minutes, and each minute into 60 equal parts called** feconds, &c. And as many degrees, minutes, feconds, &c. as are contained in any arch, of fo many degrees,... | |
| Robert Gibson - 1806 - 452 sider
...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...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... | |
| Euclid, Robert Simson - 1806 - 518 sider
...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 sider
...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... | |
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