 | Joseph Harris - 1732 - عدد الصفحات: 236
...Pole is placed, and the opppfite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts called 'Degrees, each Degree...60 equal Parts called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equir noftial is commonly divided into 24... | |
 | Benjamin Donne - 1796 - عدد الصفحات: 120
...calculating the proportion which angles bear to each other, fuppofe the circumference of every circle to be divided into 360 equal parts, called Degrees...parts, called minutes ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the circumference of a circle is called a circle; as when it is... | |
 | William Taylor (teacher of the mathematics.) - 1800 - عدد الصفحات: 556
...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... | |
 | 1801 - عدد الصفحات: 446
...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 - عدد الصفحات: 914
...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 - عدد الصفحات: 226
...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... | |
 | Robert Gibson - 1806 - عدد الصفحات: 486
...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,... | |
 | 1808 - عدد الصفحات: 290
...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... | |
 | James Ferguson - 1809 - عدد الصفحات: 574
...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... | |
 | Thomas Keith - 1810 - عدد الصفحات: 478
...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 equal...minutes, each minute into 60 equal parts called seconds. The angles are measured by the number of "egrees cut from the circle by the lines which form the B... | |
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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. 
