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" Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. "
ELEMENTARY SYNTHETIC GEOMETRY OF THE POINT, LINE AND CIRCLE IN THE PLANE - Page 19
by N. F. DUPUIS, M.A., F.R.S.C. - 1894
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The New American Practical Navigator: Being an Epitome of Navigation ...

Nathaniel Bowditch - Nautical astronomy - 1826 - 617 pages
...small, are supposed to have th cumference divided into 360 equal parts, called degrees, and each der 60 equal parts, called minutes ; and each minute into 60 equal parts. seconds, and so on into thirds, fourths,* be. and an arch is said to bi many degrees as it contains...
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The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - Trigonometry - 1827 - 513 pages
...circumference of a 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, &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,...
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An introduction to modern geography

James Thomson - 1827
...circle be divided into 360 equal parts, each of them is called a degree. Each degree is subdivided into 60 equal parts, called minutes; and each minute into 60 equal parts, called * Geography is a description of the earth ; and is distinguished by different names, according to tha...
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Elements of Geometry and Trigonometry: With Notes

Adrien Marie Legendre - Geometry - 1828 - 316 pages
...circumference of the circle is conceived 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. The semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the...
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The Common School Manual: A Regular and Connected Course of Elementary ...

Montgomery Robert Bartlett - Education - 1828
...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 are not of the same magnitude, and as they are all divided...
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Elements of Surveying: With the Necessary Tables

Charles Davies - Surveying - 1830 - 300 pages
...circumference of the 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. 26. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices...
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Easy Lessons in Geography and History: Designed for the Use of the Younger ...

Joseph Allen - America - 1832 - 116 pages
...globe, is divided into 360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided into 60 equal parts, called...and each minute into 60 equal parts, called seconds. Questions for Review. How many degrees are there in the circumference of the earth ? How many miles...
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A System of Geometry and Trigonometry: With a Treatise on Surveying; in ...

Abel Flint - Geometry - 1835 - 334 pages
...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. NOTE. Since all circles are divided into the same number of degrees, a...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 513 pages
...circumference of a 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, &c. A degree is marked thus, ; a minute thus, ' ; a second thus,"; and so on: for example, 57...
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On the Connexion of the Physical Sciences

Mary Somerville - Astronomy - 1835 - 493 pages
...NOTE 49. p. 12. Ninety degrees. A circle is divided into 3fiO equal parts, or degrees; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. It is usual to write these quantities thus, 15 16' 10'', which means fifteen degrees, sixteen minutes,...
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