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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, each minute into 60 equal parts called seconds. "
Elements of Surveying: With the Necessary Tables - Page 21
by Charles Davies - 1830 - 306 pages
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A System of Universal Geography, for Common Schools: In which Europe is ...

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...
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Elements of Plane and Spherical Trigonometry: With Their Applications to ...

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....
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A Treatise on the Elements of Algebra

Bewick Bridge - Algebra - 1821 - 227 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,...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1821 - 604 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...
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Elements of Geography, Ancient and Modern: With an Atlas

Joseph Emerson Worcester - Atlases - 1822 - 322 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!",...
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Euclid's Elements of Geometry: The Six First Books. To which are Added ...

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...
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A New System of Modern Geography, Or, A View of the Present State of the World

Sidney Edwards Morse - Geography - 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...
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A New System of Modern Geography, Or, A View of the Present State of the ...

Sidney Edwards Morse - Atlases - 1822 - 712 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...
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The Second [-fifth and Sixth] Part of A Course of Mathematics: Adapted to ...

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 ,...
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An Introduction to the Theory and Practice of Plain and Spherical ...

Thomas Keith - Navigation - 1826 - 442 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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