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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, each minute into 60 equal parts called seconds.
Elements of Surveying: With the Necessary Tables - Page 21
by Charles Davies - 1830 - 306 pages

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1848 - 288 pages
...stands at the angular point being always to be read in the middle. CD B *47. The circumference of every circle is supposed to be divided into 360 equal parts,...each degree into 60 equal parts, called minutes; and so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two lines...

## Encyclopędia Americana: A Popular Dictionary of Arts, Sciences ..., Volume 5

Francis Lieber - Encyclopedias and dictionaries - 1851 - 630 pages
...brazen meridian is the circle in which the artificial globe turns, divided into 360 degrees. Every circle is supposed to be divided into 360 equal parts,...degrees, each degree into 60 equal parts, called minutes, each minute into 60 equal parts, called seconds, &c. ; a degree is therefore only a relative idea,...

## A grammar of general geography, by J. Goldsmith, revised by E. Hughes

Richard Phillips (sir.) - 1851
...globe, and, consequently, divide it into two unequal parts. 107. All circles, whether great or less, are supposed to be divided into 360 equal parts, called degrees ; each degree into sixty equal parts, called minutes ; and each minute into sixty equal parts called seconds. Degrees...

## A System of Natural Philosophy: in which are Explained the Principles of ...

John Lee Comstock - Physics - 1852 - 578 pages
...constellation, and near the star A. 132. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having...

## A Complete Epitome of Practical Navigation ...

John William Norie - Nautical astronomy - 1852 - 848 pages
...within the circumference. The circumference of every circle is usually supposed to be divided into 860 equal parts, called DEGREES ; each degree into 60 equal parts, called MINUTES ; each minute into 60 equal parts, called SECONDS ; and so on. Degrees, minutes, and seconds, are thus...

## The American House Carpenters' and Joiners' Assistant: Being a New and Easy ...

Lucius D. Gould - Carpentry - 1853 - 234 pages
...contained by the line AC and EC, is called the angle ACE, or EGA. Fig. 9. The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc. A semicircle, therefore, contains 180 degrees, and a...

## Engineers' and Mechanics' Pocket-book ...

Charles Haynes Haswell - Engineering - 1853 - 318 pages
...without cutting it. A Cotangent is the tangent of the' complement of the arc. The Circumference of every circle is supposed to be divided into 360 equal parts called Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and BO on. The Complement of an angle is what remains after...

## The Scientific and Literary Treasury: A New and Popular Encyclopedia of the ...

Samuel Maunder - 1853 - 852 pages
...a circle, is a sector having a quarter of the circumference for its arc. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into GU minutes; and each minute into 60 seconds : hence a semicircle contains ISO degrees, and a quadrant...