 | Charles Davies - Geometrical drawing - 1846 - 254 pages
...this curve will be the circumference of a circle. 25. For what is the circumference of a circle used ? The circumference of a circle is used for the measurement of angles. 26. How is it divided? It is divided into 360 equal parts called degrees, each degree is divided into... | |
 | John Bonnycastle - Geometry - 1848 - 320 pages
...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, called degrees; 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... | |
 | Richard Phillips (sir.) - 1851
...constellation, and near the star A. 40. 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. 41. The division of the zodiac into signs is of very ancient date, each sign... | |
 | Francis Lieber - Encyclopedias and dictionaries - 1851 - 630 pages
...circle in which the artificial globe turns, divided into 360 degrees. 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, &c. ; a degree is therefore only a relative idea,... | |
 | John Lee Comstock - Physics - 1852 - 576 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... | |
 | John William Norie - Nautical astronomy - 1852 - 844 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... | |
 | John Lee Comstock - 1854 - 418 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... | |
 | Charles Davies, William Guy Peck - Mathematics - 1857 - 608 pages
...purposes of trigonometrical computation, each quadrant or right angle is supposed to be divided into 90 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds ; so that a right angle contains 32400 seconds. The... | |
 | Bourdon (M., Louis Pierre Marie) - Arithmetic - 1858 - 262 pages
...from a point within, called the centre. In all the scientific works in this country, the circumference is divided into 360 equal parts, called degrees (°)...; each degree into 60 equal parts, called minutes (,); each minute into 60 equal parts, called seconds ("). This is called the sexagesimal division.... | |
 | John Hymers - Logarithms - 1858 - 292 pages
...of being determined geometrically, and furnishes an invariable standard of angular measure) into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds; then an angle is expressed by the number of degrees,... | |
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For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 
