| Joseph Emerson Worcester - Atlases - 1822 - 322 pages
...four, the two tropics, and (he two polar circles. 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 00 equal parts, called seconds. They are marked thus, 23° 28' 16" ; i- e. 33... | |
| William Jillard Hort - 1822 - 308 pages
...is the measure of the angle contained by the lines CA and CH. 2. If the circumference of a circle 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 ; and so on ; then, as many degrees, minutes, and... | |
| Anthony Nesbit, W. Little - Measurement - 1822 - 916 pages
...of a circle bounded by an arc sad two radii. 47. 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, &c. 48. The arc of a quadrant contains 90 degrees,... | |
| Rev. John Allen - Astronomy - 1822 - 508 pages
...called acute.* * Mathematicians have supposed the whole circumference of a circle to be divided in **360 equal parts, called degrees, each degree into 60 equal parts, called minutes,** and each minute into 60 equal parts, called seconds, Stc. and a circle being described from the vertex... | |
| Anthony Nesbit - Surveying - 1824 - 476 pages
...of a circle bounded by an arc and two radii. 47. 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. 48. The arc of a quadrant contains 90 degrees,... | |
| George G. Carey - Astronomy - 1825 - 274 pages
...the plane of the circle. 8. Degrees, fyc. — All circles, whether great or small, are 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, &c.f 9. An Angle is the inclination of two lines... | |
| Thomas Keith - Navigation - 1826 - 442 pages
...the arc DE is the measure of the angle ABC. (H) The circumference of every circle is supposed to be **divided into 360 equal parts called 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 degrees cut from the circle... | |
| Miles Bland - Geometry - 1827 - 458 pages
...angle (7.) Till lately. Geometers almost unanimously agreed to divide the circumference of the circle **into 360 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... | |
| Thomas Kerigan - Nautical astronomy - 1828 - 776 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is **divided into 360 equal parts, called degrees ; each...into 60 equal parts, called minutes } each minute** into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth is a great... | |
| Montgomery Robert Bartlett - Education - 1828 - 426 pages
...the circle inUlour equal parts called quadrants. 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; and these into thirds, &c. Now, as all circles... | |
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