 | Thomas Keith - 1817 - 306 sider
...the arc DE is the measure of the angle » BE, and the arc G n is the measure of the angle ABC. 14. The circumference of every circle is supposed to be...; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. The angles are measured by the number of degrees... | |
 | Nathaniel Dwight - 1817 - 228 sider
...Circles, which divide it into Unequal parts. Q. What are the Degrees of a Circle ?. A. The circumferer.ee of every circle is supposed to be divided into 360...; each degree into. 60 equal parts called minutes ;• and each minute into 60 seconds. Q. What is the EQUATOR ? A. It is the circumference of a great... | |
 | Charles Hutton - 1818 - 646 sider
...the middle. Thus the angle contained by the lines BA and 3D is called the angle BAC BAD or DAB. 67. 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 60 Seconds, and so on. Hence a semicircle contains... | |
 | Abel Flint - 1818 - 184 sider
...Centre ; and it divides the Circle into two equal parts, called Semicircles ; as AB or DE. Fig 5. 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... | |
 | Robert Gibson - 1818 - 502 sider
...about circles, be supposed to be 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... | |
 | Miles Bland - 1819 - 442 sider
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers... | |
 | William Nicholson - 1819 - 414 sider
...otherwise called a periphery ; the boundary of a right lined figure being expressed by the term perimeter. The circumference of every circle is supposed to be divided into 360 degrees. The angle at the circumference of a circle is double that at the centre. For the ratio of... | |
 | Miles Bland - 1819 - 444 sider
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes ; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers... | |
 | William Hawney - 1820 - 336 sider
...thus the arch I)E is the measure of the angle DBE aud the arch GH is the measure of the angle ABC. 1*. The circumference of every circle is supposed to be...; each degree into 60 equal parts, called minutes : and each minute into 60 equal parts, called seconds. Angles are measured by the number of degrees... | |
 | Bewick Bridge - 1821 - 648 sider
...For the purpose of exhibiting arithmetically the magnitude of angles, the whole circumference of the circle is supposed to be divided into 360 equal parts,...each minute into 60 equal parts, called seconds; &c. &c. And since arcs are the measures of angles, every angle may be said to be an angle of such number... | |
| |
The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. 
