Books Books 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, etc. Instructions Given in the Drawing School Established by the Dublin Society ... - Page 241
by Joseph Fenn - 1769 ## A New and Complete System of Arithmetic: Intended for the Use of Schools and ...

Caleb Alexander - Arithmetic - 1813 - 152 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and each degree, into 60 equal parts, called minutes; and each minute, into 60 equal parts, called seconds, and these into thirds, fourtUs, &c. 14. Parallel lines are equidistant from each other. 15 A figure,... ## Easy Introduction to Mathematics, Volume 2

Charles Butler - 1814 - 568 pages
...usual to divide the whole circumference into 36O equal parts called degrees, to subdivide each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, &c. wherefore, if an angle at the centre be subtended by an arc which consists of suppose 30 degrees,... ## The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1814 - 558 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 tiiese into thirds, fourths, &c. these parts being greater or less as the radius is.17. A chord... ## The Reader: Containing I. The Art of Delivery ... a Selection of Lessons in ...

Abner Alden - English language - 1814 - 222 pages
...number of circles ; and each circle 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. Q. What is a great circle ? A. A great circle is one, whose plane is supposed to pas through the centre... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 588 pages
...circumference of a circle is supposed to be divided fnto 360 equal parts called degrees, and each degree into 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 arc h, of so many degrees, minutes,... ## A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - Plane trigonometry - 1817 - 392 pages
...periphery 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, 8cc. 3. The measure of an angle is the arc of a circle, con-, tuined between the two lines that form... ## The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817 - 304 pages
...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. The angles are measured by the number of degrees cut off from the circle, by the lines which form the... ## Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - Euclid's Elements - 1819 - 444 pages
...agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes ; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... ## Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - Euclid's Elements - 1819 - 442 pages
...agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... 