 | Charles Hutton - 1811 - عدد الصفحات: 494
...before observed in Geom. Def. 56) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 3. The Measure of an angle... | |
 | James Hayward - 1829 - عدد الصفحات: 218
...purpose, the ancients divided the circumference of the circle into 360 equal parts, called degrees ; each degree into 60 minutes ; and each minute into 60 seconds. And the magnitude of an angle they expressed by the degrees, (°) minutes (') and seconds (",) which express... | |
 | Charles Hutton - 1831 - عدد الصفحات: 660
...before observed in Geom. Def. 56) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 3. The Measure of an angle... | |
 | Charles Haynes Haswell - 1844 - عدد الصفحات: 298
...The Circumference of everjr circle is supposed to be divided into 360 cqnal parts called Degrees } each degree into 60 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle is what remains after subtracting- the angle from 90 degrees. The... | |
 | Charles Haynes Haswell - 1851 - عدد الصفحات: 346
...i The . Circumference of every circle is supposed to be divided into 360 equal parts .led Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and on. The Complement of an angle is what remains after subtracting the angle from 90 . Supplement of... | |
 | Charles Haynes Haswell - 1858 - عدد الصفحات: 350
...The Circumference of every circle is supposed to be divided into 360 equal parts, called Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle is what remains after subtracting the angle from 90 degrees. The... | |
 | Robert Potts - 1860 - عدد الصفحات: 380
...circumference of a circle may be found. If the right angle be considered as divided into 90 degrees, each degree into 60 minutes, and each minute into 60 seconds, and so on, according to the sexagesimal division of a degree ; by the aid of the first corollary to Prop.... | |
 | Euclides - 1864 - عدد الصفحات: 448
...circumference of a circle may be found. If the right angle be considered as divided into 90 degrees, each degree into 60 minutes, and each minute into 60 seconds, and so on, according to the sexagesimal division of a degree ; by the aid of the first corollary to Prop.... | |
 | Euclides - 1864 - عدد الصفحات: 262
...circumference of a circle may be found. If the right angle be considered as divided into 90 degrees, each degree into 60 minutes, and each minute into 60 seconds, and BO on, according to the sexagesimal division of a degree; by the aid of the first corollary to Prop.... | |
 | Robert Potts - 1865 - عدد الصفحات: 528
...circumference of a circle may be found. If the right angle be considered as divided into 90 degrees, each degree into 60 minutes, and each minute into 60 seconds, and so on, according to the sexagesimal division of a degree ; by the aid of the first corollary to Prop.... | |
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... center of the same circle, subtend equal arcs ; by bisecting the angles at the center, the arcs which are subtended by them are also bisected, and hence, a sixth, eighth, tenth, twelfth, &c. part of the circumference of a circle may be found. If the... 
