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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.
An Elementary Geometry and Trigonometry - Page 11
by William Frothingham Bradbury - 1873 - 238 pages

## A System of Universal Geography, for Common Schools: In which Europe is ...

Nathaniel Dwight - Geography - 1816 - 220 pages
...parts. Q. What are the degrees of a circle ? A. The circumference of every circle is supposed to be divided into 360 equal parts called degrees ; each...equal parts called minutes ; and each minute into 60 seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and...

## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 pages
...II. The circumference of a circle is supposed to be divided fnto 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 arc h, of so many degrees, minutes,...

## Elements of Plane and Spherical Trigonometry: With Their Applications to ...

Olinthus Gregory - Plane trigonometry - 1816 - 278 pages
...of the angle ACB. 10. The circumference of a circle is supposed to be divided, or to be divisible, into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; each of these into 60 equal parts, called seconds ; and so on, to the minutest possible subdivisions....

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

John Gummere - Surveying - 1817 - 206 pages
...three angles, are given, the others are determined. 2. The periphery of every circle is supposed to be divided into 360 equal parts, called degrees ; each...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...

## The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817 - 304 pages
...the arc G n is the measure of the angle ABC. 14. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each...and each minute into 60 equal parts, called seconds. The angles are measured by the number of degrees cut off from the circle, by the lines which form the...

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

Miles Bland - Euclid's Elements - 1819 - 444 pages
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal...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 - 442 pages
...Till lately, Geometers almost unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal...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...

## Hawney's Complete Measurer: Or, The Whole Art of Measuring: Being a Plain ...

William Hawney - Geometry - 1820 - 312 pages
...the arch GH is the measure of the angle ABC. 1*. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each...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 the angles....