| Joseph Harris - Astronomical models - 1732 - 190 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... | |
| 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 circumference of a circle... | |
| William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 519 pages
...a' femi-eircle • half the diameter is 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.... | |
| Mathematics - 1801
...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 - Classical dictionaries - 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* ņutes \ each minute into 60 feccnds ; and thefe into thirds, fourths, &c. greater or Ąefs according... | |
| Abel Flint - Geometry - 1804 - 168 pages
...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... | |
| John Bonnycastle - Trigonometry - 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...; 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 - Surveying - 1806 - 452 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,... | |
| Astronomy - 1808 - 272 pages
...Ecliptic. This circle we 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** every minute into 60 equal parts, called Seconds; so that a second is the 60th part of a minute ; a... | |
| James Ferguson - Astronomy - 1809 - 533 pages
...ecliptic. tic. This circle we 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... | |
| |