| 1769 - 92 pages
...they fubtend will be in the fame ratio. C NB NB Mathematicians divide the circumference of a circle **into 360 equal parts, called degrees, each degree into 60 minutes, and each minute into 60** feconds. Thefe divifions being marked on a femi-circle of brafs, or on an ivory rectangle, called protraftor,... | |
| John Muller - 1773 - 130 pages
...in the fame ratio. C 3 NE NB Mathematicians divide the cir-r cumference of a circle into 360 equa} **parts, called degrees, each degree into 60 minutes, and each minute into 60** feconds. Thefe divifions being marked on a femi-circle of brafs, or on an ivory recl> angle, called... | |
| Benjamin Donne - 1796
...calculating the proportion which angles bear to each other, fuppofe the circumference of every circle **to be divided into 360 equal parts, called Degrees ; each degree into 60** equal parts, called minutes ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the... | |
| Samuel Webber - 1801
...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... | |
| Alexander Adam - 1802 - 858 pages
...radii of the fame circle are always equal to one another. The circumference of every circle is fuppofed **to be divided into 360 equal parts, called degrees ; each degree into 60** mi* ñutes \ each minute into 60 feccnds ; and thefe into thirds, fourths, &c. greater or ¡efs according... | |
| Abel Flint - 1804 - 168 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 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... | |
| David Steel - 1805
...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... | |
| John Bonnycastle - 1806 - 419 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 ; &c. So that a semicircle,... | |
| Robert Gibson - 1806 - 452 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,... | |
| Thomas Keith - 1810 - 420 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...360 equal parts called degrees, each degree into 60** equal parts called minutes, each minute into 60 equal parts called seconds. The angles are measured... | |
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