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" 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 60 equal parts, called seconds ; and these into thirds, &c. "
The First Six Books: Together with the Eleventh and Twelfth - Seite 483
von Euclid - 1781 - 520 Seiten
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Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - 1819 - 377 Seiten
...unanimously agreed to divide the circumference of the circle into 36o 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 some facilities for calculations,...
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Hawney's Complete Measurer: Or, The Whole Art of Measuring. Being a Plain ...

William Hawney - 1820 - 312 Seiten
...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. Angles are measured by the number of degrees cut oft'from the circle, by the lines which form...
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A Treatise of Algebra: Wherein the Principles are Demonstrated ... To which ...

Thomas Simpson - 1821 - 408 Seiten
...some assigned number of equal parts. 2. The periphery of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree...minutes, and each minute into 60 equal parts, called seconds, or second minutes, <Jc. Any part of the periphery is called an arch, and is measured by the...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1821 - 544 Seiten
...theradius,as AB or DE. fig. 8. 16. 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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Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Euclid, Rev. John Allen - 1822 - 494 Seiten
...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 angle, as a centre, an angle is said...
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A general view of the sciences and arts, Band 1

William Jillard Hort - 1822
...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 seconds, &c. as are in any arch ; so many...
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A Treatise on Practical Gauging

Anthony Nesbit, W. Little - 1822
...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, which is the measure of a right angle....
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Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Euclid, Rev. John Allen - 1822 - 494 Seiten
...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, cal:ed seconds, &c. and a circle being described iron) the vertex of an angle, as a centre, an angle...
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Elements of Geography, Ancient and Modern: With an Atlas

Joseph Emerson Worcester - 1822 - 322 Seiten
...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 degrees, 28 minute!",...
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A treatise of practical mensuration

Anthony Nesbit - 1824 - 434 Seiten
...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, which is the measure of a right angle. 49....
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