Books Books 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 ## Easy Lessons in Geography and History: Designed for the Use of the Younger ...

Joseph Allen - America - 1832 - 128 pages
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... ## Elements of Plane Trigonometry

William Smyth - Plane trigonometry - 1834 - 102 pages
...described with equal radii. ' 10. The entire circumference of every circle, whether great or small, is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds, each second into 60 equal parts called thirds, &c.... ## An Elementary Treatise on Geometry: Simplified for Beginners Not ..., Part 1

Francis Joseph Grund - Geometry, Plane - 1834 - 206 pages
...arcs of circles, described with any radius between their legs. The circumference is, for this purpose, divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; each minute, again, into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not... ## Mathematics for Practical Men: Being a Common-place Book of ... Pure and ...

Olinthus Gregory - Mathematics - 1834 - 480 pages
...(See the next figure.) 3. 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.... ## On the Connexion of the Physical Sciences

Mary Somerville - Astronomy - 1835 - 532 pages
...axis of the ellipse. NOTE 49. p. 12. Ninety degrees. A circle is divided into 3fiO equal parts, or degrees; each degree into 60 equal parts, called minutes...and each minute into 60 equal parts, called seconds. It is usual to write these quantities thus, 15° 16' 10'', which means fifteen degrees, sixteen minutes,... ## A System of Geometry and Trigonometry: With a Treatise on Surveying; in ...

Abel Flint - Geometry - 1835 - 366 pages
...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. NOTE. Since all circles are divided into the same number of degrees, a... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 540 pages
...II. The circumference of a 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, &c. A degree is marked thus, ° ; a minute thus, ' ; a second thus,"; and so on: for example, 57°... ## A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - Physics - 1835 - 308 pages
...another constellation, and neai the star a. 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 GO parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... ## A System of Natural Philosophy, in which the Principles of Mechanics ...

John Lee Comstock - 1835 - 308 pages
...another constellation, and neai the star a. 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 (50 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... 