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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 Theory and Practice of Surveying: Containing All the Instructions ... - Σελίδα 45
των Robert Gibson - 1821 - 544 σελίδες
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## Elements of Surveying: With the Necessary Tables

Charles Davies - 1830 - 306 σελίδες
...calculations, the circumference of the 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. 26. As the circumference of a circle may be regarded as a proper measure...

## The Builder's Practical Guide: Containing a Complete Explanation of the ...

John Nicholson (Civil engineer) - 1830 - 182 σελίδες
...radii and an arc, as BIK (Fig. 19). 49. The circumference of every circle, whether great or small, is supposed to be divided into 360 equal parts, called degrees ; and every degree into 60 parts, called minutes ; and every minute into 60 seconds. To measure the inclination...

## Elements of Surveying

Charles Davies - 1830 - 300 σελίδες
...angles that are given. 25. For the purposes of trigonometrical calculations, the circumference of the 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 New and Easy Introduction to the Mathematics: Containing. A system of ...

Ira Wanzer - 1831 - 396 σελίδες
...or 360 degrces,= {he ^. Note 1. — This table is used by Astronomers, Navigators, &c. Note 2. — 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 seconds, and each second into...

## New University Arithmetic: Embracing the Science of Numbers, and Their ...

Charles Davies - 1856 - 437 σελίδες
...latitude and longitude, in measuring the motions of the heavenly bodies, and also in measuring angles. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into CO minutes, and each minute into 60 seconds. TABLE. 422. For what is circular...

## Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - 1856 - 311 σελίδες
...degrees, the whole circle of the Zodiac.7 75. Every circle, whether the greatest or least possible, is divided into 360 equal parts, called degrees, and each degree into 60 equal 1 PLANET, from planao, G. to wander, means a celestial (4) body, which revolvea about the sun or other...

## A course of practical geometry for mechanics

William Pease - 1856
...standard of measurement for angles has been obtained. Among English mathematicians, the circumference of a circle is supposed to be divided into 360 equal parts, called degrees ; an angle which is formed by two radii will therefore contain a certain number of those parts, and...

## A High-school Astronomy: In which the Descriptive, Physical, and Practical ...

Hiram Mattison - 1856 - 240 σελίδες
...circles, whether great or small, are 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. They are marked respectively thus: Degrees (°), minutes ('), seconds...

## A NEW SYSTEM OF ARITHMETIC

CHARLES G. BURNHAM - 1857
...Sassing through the centre ; and it ivicles the circle into two equal parts called semicircles. 14. The circumference of every circle is supposed to be...equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc. Hence a semicircle contains 180 degrees,...

## Bouvier's Familiar Astronomy, Or, An Introduction to the Study of the ...

Hannah Mary Bouvier - 1857 - 499 σελίδες
...See PLEIADES. Sexagesimal. — The division of the circle by lixtie*. — Thus, the circumference is divided into 360 equal parts called degrees, and each...degree into 60 equal parts called minutes, and each minnto into 60 equal parts called second;. Seztani. — A southern constellation, the middle of which...