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, each minute into 60 equal parts called seconds. Elements of Surveying: With the Necessary Tables - Page 21
by Charles Davies - 1830 - 306 pages ## The Normal Standard Arithmetic: By Analysis and Induction, Designed for ...

Edward Brooks - Arithmetic - 1895 - 426 pages
...the circumference is called a quadrant. 241. 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. 242. Any angle having its vertex at the centre is... ## Plane Geometry

George D. Pettee - Geometry, Plane - 1896 - 272 pages
....-.theirlimits=J 175. Sen. Both the circumference of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each...60 equal parts called minutes, and each minute into CO equal parts called seconds. Since central angles vary as their intercepted arcs, any central angle... ## Self Culture; a Monthly Devoted to the Interests of the Home University League

Edward Cornelius Toune, Graeme Mercer Adam - 1897 - 692 pages
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of... ## Self Culture, Volume 5

Self-culture - 1897 - 592 pages
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of... ## Coal and Metal Miners' Pocketbook of Principles, Rules, Formulas, and Tables ...

International Correspondence Schools - Mining engineering - 1900 - 730 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... ## A School Geometry, Parts 1-4

Henry Sinclair Hall - 1908 - 286 pages
...which it is perpendicular to AB. (ii) All right angles are equal. A right angle is divided into 90 equal parts called degrees (°) ; each degree into 60 equal parts called minutes (') ; each minute into 60 equal parts called seconds ("). In the above figure, if OC revolves about... ## The Gilbert Arithmetics, Book 2, Parts 1-2

Charles H. Gleason - Arithmetic - 1910 - 536 pages
...scale of J in. to 1 ft. MEASUREMENT OF ANGLES 324. The circumference of every circle, large or small, is supposed to be divided into 360 equal parts, called degrees (°); each degree into 60 minutes ('); and each minute into 60 seconds ("). Thus: the circumference of the circle ABCD = 360°.... ## The Carpenter's Cyclopedia: Comprising Modern Carpentry, Plain ..., Volumes 1-2

Frederick Thomas Hodgson - Carpentry - 1913 - 1208 pages
...materially in understanding other problems. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree containing 60 minutes, a smaller division, and each minute into 60 seconds, a still smaller division.... ## Modern Carpentry: A Practical Manual ...

Frederick Thomas Hodgson - Carpentry - 1917 - 392 pages
...materially in understanding other problems. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree containing 60 minutes, a smaller division, and each minute into 60 seconds, a still smaller division.... 