 | Joseph Harris - 1732 - 236 pages
...Pole is placed, and the opppfite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts called 'Degrees, each Degree into 60 equal Parts called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equir noftial is commonly... | |
 | Joseph Harris - 1757 - 242 pages
...Pole is placed, and the oppofite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts, called Degrees, each Degree into 60 equal Parts, called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equinoctial is alfo divided... | |
 | Benjamin Donne - 1796 - 120 pages
...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. NB Sometimes the circumference of a circle is... | |
 | 1801 - 446 pages
...that, which stands at the angular point, is read in the tmddle. 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 - 914 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... | |
 | John Bonnycastle - 1806 - 464 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...; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds ; &c. So that a semicircle, or half the circumference,... | |
 | Robert Gibson - 1806 - 486 pages
...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 - 478 pages
...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 divided into 360...degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. The angles are measured by the number of "egrees cut... | |
 | Thomas Simpson - 1810 - 168 pages
...certain right lines in and about the circle be supposed 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... | |
 | Euclid - 1810 - 554 pages
...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 called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees... 
