| Nathaniel Dwight - Geography - 1816 - 220 pages
...which divide it into unequal parts. Q. What are the degrees of a circle ? A. The circumference of every **circle is supposed to be divided into 360 equal parts...equal parts called minutes ; and each minute into 60** seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and... | |
| Olinthus Gregory - Plane trigonometry - 1816 - 278 pages
...of the angle ACB. 10. The circumference of a circle is supposed to be divided, or to be divisible, **into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes** ; each of these into 60 equal parts, called seconds ; and so on, to the minutest possible subdivisions.... | |
| Bewick Bridge - Algebra - 1821 - 648 pages
...a given radius. 3. For the purpose of exhibiting arithmetically the magnitude of angles, the whole **circumference of the circle is supposed to be divided...degrees; each degree into 60 equal parts, called minutes;** each minute into 60 equal parts, called seconds; &c. &c. And since arcs are the measures of angles,... | |
| Robert Gibson - Surveying - 1821 - 594 pages
...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** 00 equal parts called seconds, and- these into thirds, fourths, &c. these parts being greater or less... | |
| Joseph Emerson Worcester - Atlases - 1822 - 354 pages
...equal parts. These are four, the two tropics, and (he two polar circles. The circumference of every **circle is supposed to be divided into 360 equal parts,...equal parts, called minutes ; and each minute into** 00 equal parts, called seconds. They are marked thus, 23° 28' 16" ; i- e. 33 degrees, 28 minute!",... | |
| Rev. John Allen - Astronomy - 1822 - 516 pages
...tailed acute.* * Mathematicians have supposed the whole circumference of a circle to be divided in **360 equal parts, called degrees, each degree into...called minutes and each minute into 60 equal parts,** cal:ed seconds, &c. and a circle being described iron) the vertex of an angle, as a centre, an angle... | |
| Sidney Edwards Morse - Atlases - 1822 - 706 pages
...drawn through the centre from one side of the circumference to the other. The circumference of every **circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60** minutes ; each minute into 60 seconds. An arc of a circle is part of its circumference. All angles... | |
| Sidney Edwards Morse - Atlases - 1822 - 706 pages
...drawn through the centre from one side of the circumference to the other. The circumference of every **circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60** minutes ; each minute into GO seconds. An arc of a circle is part of its circumference. All angles... | |
| Jeremiah Day - Geometry - 1824 - 440 pages
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, **is supposed to be divided into 360 equal parts called degrees, each degree into 60** minutes, each minute into 60 seconds, each second into 60 thirds, &c. marked with the characters °,... | |
| Thomas Keith - Navigation - 1826 - 504 pages
...of the angle авс 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 parts...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... | |
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