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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. "
A Treatise on Surveying, Containing the Theory and Practice: To which is ... - Page 34
by John Gummere - 1814 - 346 pages
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A New System of Modern Geography, Or, A View of the Present State of the World

Sidney Edwards Morse - Atlases - 1822 - 706 pages
...straight line 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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Euclid's Elements of Geometry: The Six First Books. To which are Added ...

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 of an...
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A general view of the sciences and arts, Volume 1

William Jillard Hort - 1822 - 308 pages
...and in more modern times, Napier, the inventor of logarithms, and Briggs. In plane trigonometry, the circle is supposed to be divided into 360 equal parts, called degrees ; every degree into 60 equal parts, called minutes ; every minute into 60 equal parts, called seconds...
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A Treatise on Practical Mensuration in Eight Parts ...

Anthony Nesbit - Surveying - 1824 - 476 pages
...as ADC. 46. A sector is any part of a circle bounded by an arc and two radii. 47. The circumference of every circle is supposed to be divided into 360...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, which is...
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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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Astronomy, as it is Known at the Present Day: With an Account of the Nature ...

George G. Carey - Astronomy - 1825 - 274 pages
...still be in the plane of the circle. 8. Degrees, fyc. — All circles, whether great or small, are supposed to be divided into 360 equal parts, called...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 which...
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Glasgow Mechanics' Magazine, and Annals of Philosophy, Volume 3

Industrial arts - 1825 - 590 pages
...circumference of all circles, whether small or great, is supposed to be divided into 360 equal parts, which are called degrees ; each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, in the same manner as a yard is divided into 3 equal parts...
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An Introduction to the Theory and Practice of Plain and Spherical ...

Thomas Keith - Navigation - 1826 - 504 pages
...the measure 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...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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A New Treatise on the Use of the Globes: Or, A Philosophical View of the ...

Thomas Keith - Globes - 1826 - 360 pages
...1820, is 14° 13' 7" ; and its declination 88° 20' 55" N. Connoissance des Terns, for 1820, p. 168. t Every circle is supposed to be divided into 360 equal parts called degrees ; each minute, into 60 equal parts called seconds, &c. : (a degree therefore is of different lineal extent,...
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Geometrical Problems Deducible from the First Six Books of Euclid: Arranged ...

Miles Bland - Euclid's Elements - 1827 - 462 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 to afford...
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