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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.
Easy Lessons in Geography and History: Designed for the Use of the Younger ... - Page 39
by Joseph Allen - 1832 - 116 pages

## A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - Surveying - 1817 - 206 pages
...periphery 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, 8cc. 3. The measure of an angle is the arc of a circle, con-, tuined between the two lines that form...

## Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - Euclid's Elements - 1819 - 442 pages
...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, in consequence...

## Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - Euclid's Elements - 1819 - 444 pages
...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, in consequence...

## Geography: Or, A Description of the World

Geography - 1820 - 352 pages
...part of any circle. A Degree of a great circle of the earth contains 60 geographical, Or 69\$ English miles. Each degree is divided into 60 equal parts, called minutes ; and each minute into 60seconds. Degrees are usually marked with a small cypher over them (°), minutes with one dash ('),...

## Geography: Or, A Description of the World. In Three Parts. Part I ...

Daniel Adams - Geography - 1821 - 354 pages
...part of any circle. A degree of a great circle of the earth contains 60 geographical, 91 ti9f English miles. Each degree is divided into 60 equal parts, called minutes; and each minute into 60 seconds. Degrees are usually marked with a small cypher over them (°), minutes with one dash ('),...

## A Treatise of Algebra: Wherein the Principles are Demonstrated ... To which ...

Thomas Simpson - Algebra - 1821 - 408 pages
...periphery 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, or second minutes, <Jc. Any part of the periphery is called an arch, and is measured by the number...

## Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Rev. John Allen - Astronomy - 1822 - 508 pages
...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 to be...

## A general view of the sciences and arts, Volume 1

William Jillard Hort - 1822 - 308 pages
...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 degrees,...