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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 - Page 483
by Euclid - 1781 - 520 pages
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Elements of Plane Trigonometry: And Their Application to the Measurement of ...

William Frothingham Bradbury - Plane trigonometry - 1864
...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 ( "). 34. The RADIUS of a circle is a line drawn from the centre to the circumference ; as...
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Smith's Illustrated Astronomy: Designed for the Use of the Public Or Common ...

Asa Smith - 1868 - 79 pages
...The circumference of every circle ˇв supposed to be divided into and equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Circumpolar Start.— Those stars which revolve around the pole without passing below the...
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Elements of Geometry and Trigonometry, from the Works of A.M. Legendre

Adrien Marie Legendre - Geometry - 1869 - 455 pages
...the quadrant is divided into 90 equal parts, each of which k called a degree ; each degree into 00 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7°...
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A complete treatise on practical land-surveying

Anthony Nesbit - 1870
...39. 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. 40. The diameter of a circle is a right line drawn through the centre, A and terminating in...
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Elements of Surveying and Levelling: With Descriptions of the Instruments ...

Charles Davies - Leveling - 1871 - 431 pages
...the quadrant is divided into 90 equal parts, each of which is called a degree; each degree into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7°...
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An Elementary Geometry and Trigonometry

William Frothingham Bradbury - Geometry - 1872 - 238 pages
...triangles. 17. The circumference of every circle is dividad into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes ( ' ), and each minute into 60 equal parts, called seconds ( " ). 18. As angles at the centre valy as their arcs, or arcs as their corresponding angles,...
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Elements of geometry, with ... trigonometry

André Darré - 1872
...circumference of every circle is supposed to be divided are called degrees ; each degree is divided into 60 equal parts called minutes ; and each minute into 60 equal parts called seconds. Symbols are used to express degrees, minutes, and seconds. Thus 57° 17' 45" means 57 degrees,...
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Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies - Geometry - 1872 - 455 pages
...the quadrant is divided into 90 equal parts, each of which is called a degree / each degree into 80 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7...
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Elements of Geometry and Trigonometry: From the Works of A.M. Legendre

Adrien Marie Legendre - Geometry - 1874 - 455 pages
...angle. For convenience, the quadrant is divided into 90 equal parts, each of which is called a degree ; each degree into 60 equal parts, called • minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7°...
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Elements of Astronomy: Accompanied with Numerous Illustrations, a Colored ...

Sir Norman Lockyer - Astronomy - 1874 - 312 pages
...circle may be divided into 360 equal parts, called Degrees (marked °). Each degree may be divided into 60 equal parts, called Minutes (') ; and each minute into 60 equal parts, called Seconds ("). A circumference may also be divided into 12 equal parts, of 30 degrees each. These are...
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