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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.
A Treatise on Surveying: Containing the Theory and Practice : to which is ... - Page 33
by John Gummere - 1846 - 266 pages

## Arithmetic, algebra, logarithms, geometry and trigonometry, elementary ...

...from the given parts is called the solution of the triangle. 78. In trigonometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; every degree is subdivided into 60 equal parts, called minutes; and every minute is again divided...

## A Treatise on Coal Mining: Prepared for Students of the International ...

...from the given parts is called the solution of the triangle. 741. In Trigonometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; every degree is subdivided into 60 equal parts, called minutes, and every minute is again divided...

## Coal and Metal Miners' Pocketbook of Principles, Rules, Formulas, and Tables ...

International Correspondence Schools - Mining engineering - 1900 - 637 pages
...circumference being at the vertex of the angle. For measuring angles, the circumference is divided into :i60 equal parts. called degrees; each degree into 60 equal parts called minutes. A quadrant is one-fourth the circumference of a circle, or 90°. The complement of an arc is 90° minus...

## Elementary Algebra and Mensuration: Instruction Paper

American School (Lansing, Ill.) - Algebra - 1902 - 72 pages
...degrees is measured by ^ of the circumference. 185. For accurate measurement each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts ('ailed seconds. The symbols of degrees, minutes and seconds are °, ', ", respectively. To express...

## Mathematics

...degrees is measured by ^ of the circumference. 185. For accurate measurement each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. The symbols of degrees, minutes and seconds are °, ', ", respectively. To express 23 degrees, 47 minutes...

## The Progressive Arithmetic: Part I-[III], Part 3

...o'clock, in what time will the hands of a clock be at right angles to each other ? 1. For convenience, every circle is supposed to be divided into 360 equal parts called degrees. 2. By means of an instrument called a protractor any angle can be measured. 3. From cardboard cut out...

## The Elements of Geometry

Walter Nelson Bush, John Bernard Clarke - Geometry - 1905 - 355 pages
...theorem may be stated thus : A central angle is measured by its intercepted arc. The circumference is divided into 360 equal parts, called degrees ; each...and each minute into 60 equal parts, called seconds. For brevity, an angle measured by an arc of 1° is called an angle of 1° ; etc. NOTE. — This division...

## School Arithmetic: Practical Book

John Marvin Colaw, Frank Williamson Duke - Arithmetic - 1906 - 400 pages
...passing around the earth on its surface ? 444. In measuring circumferences, each degree is divided in 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. In this measure, degrees, minutes, and seconds are written with symbols. Thus, 3 degrees, 25 minutes,...

## ... New Complete Geography

Matthew Fontaine Maury - Arkansas - 1906 - 225 pages
...equally ? which unequally ? Examine the edges of the pieces ; which are great circles ? Small circles ? Every circle is supposed to be divided into 360 equal parts called degrees, marked (°). Each degree is divided into tiO minutes, marked ('), and each minute into 60 seconds,...

## Mechanics and Hydrostatics for Beginners

Sidney Luxton Loney - Hydrostatics - 1905 - 290 pages
...inconvenient unit of measurement on account of its size. We therefore subdivide a right angle into 90 equal parts called degrees, each degree into 60 equal...and each minute into 60 equal parts called seconds. The symbols used for a degree, a minute, and a second are 1°, 1', and 1". Thus 10° 11' 12" means...