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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
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1825 - 241 σελίδες
...or DE. Fig. 5. 14. The Circumference of every Circle is sipposed to be divided into 360 equal part?, 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. JVote. Since all Circles are divided into...

Astronomy, as it is Known at the Present Day: With an Account of the Nature ...

George G. Carey - 1825 - 166 σελίδες
...All 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, &c.f 9. An Angle is the inclination of two lines which meet in a point,...

Glasgow Mechanics' Magazine, and Annals of Philosophy, Τόμος 3

1825
...whether small or great, is supposed to be divided into 360 equal parts, which are called degrees ; each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, in the same manner as a yard is divided into 3 equal parts called feet,...

The New American Practical Navigator: Being an Epitome of Navigation ...

Nathaniel Bowditch - 1826 - 617 σελίδες
...the figure CAG. NOTE. All circles, whether great or small, are supposed to have their circumference divided into 360 equal parts, called degrees, and...equal parts, called minutes ; and each minute into 60 equal parts, called seconds, and so on into thirds, fourths,* be. and an arch is said to be. of...

An Introduction to the Theory and Practice of Plain and Spherical ...

Thomas Keith - 1826 - 442 σελίδες
...thus the arc ac is the measure of the angle авс and the arc DE is the measure of the angle ABC. (H) 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. The...

A New Treatise on the Use of Globes: With Notes and Observations, Containing ...

James M'Intire - 1826 - 215 σελίδες
...which the sun describes by his annual progress in the heavens. The ecliptic cuts the equator in an •The circumference of every circle is supposed to be divided into 360 equal jjarts, called degrees; each degree into sixty equal parts, called minutes; each minute into sixty...

A New Treatise on the Use of the Globes: Or, A Philosophical View of the ...

Thomas Keith - 1826 - 334 σελίδες
...1820, is 14° 13' 7" ; and its declination 88° 20' 55" N. Connoissance des Terns, for 1820, p. 168. t Every circle is supposed to be divided into 360 equal parts called degrees ; each minute, into 60 equal parts called seconds, &c. : (a degree therefore is of different lineal...

The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - 513 σελίδες
...meeting BA, BC, in A, C ; the arch AC is called the measure of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal parts...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...

An Elementary Treatise on Arithmetic, in Theory and Practice: Adapted to the ...

James Ryan - 1827 - 272 σελίδες
...are there between the 17th of March and the 25th of December ? Ans. 283. Division of the Circle. 47. The circumference of every circle is supposed to be divided into 360 equal parts called degrees — each degree is subdivided into 60 equal parts called minutes — each minute into 60 equal parts...

Sequel to The Analytical Reader: In which the Original Design is Extended ...

Samuel Putnam - 1828 - 300 σελίδες
...greater part are poor and destitute. • ANGLE, a corner, formed usually by the meeting of two lines. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees. A semi-circle, of course, contains li!0 degress, and a quadrant, or quarter of a circle, contains SO...