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, &c. The First Six Books: Together with the Eleventh and Twelfth - Page 483
by Euclid - 1781 - 520 pages ## A System of Natural Philosophy: in which the Principles of Mechanics ...

John Lee Comstock - Physics - 1813 - 340 pages
...star a. 762. 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... ## The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Electronic books - 1814 - 508 pages
...isdoublethe radius, as AB or DE. fig. 8. 16. The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into...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.... ## The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814
...of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal part* called degrees, and each degree into 60 equal parts...minutes, and each minute into 60 equal parts called seconds, &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees,... ## An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - Mathematics - 1814
...angle. It is usual to divide the whole circumference into 360 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... ## A Compendious System of Practical Surveying, and Dividing of Land: Concisely ...

Surveying - 1814 - 227 pages
...both segments of the circle, as DFE and DGE. 12. A Circle is actually, or supposed to be divided into 360 equal parts, called Degrees, and each degree into 60 equal parts, called Minutes ; and these into seconds, &c. 13. An Angle is so many degrees, as lines drawn from the centre of a circle,... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 pages
...called the measure of the angle ABC. II. The circumference of a circle is supposed to be divided fnto 360 equal parts called degrees, and each degree into...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,... ## A System of Universal Geography: For Common Schools: in which Europe is ...

Nathaniel Dwight - Geography - 1816 - 213 pages
...A. 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 seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and... ## A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - Surveying - 1817 - 206 pages
...determined. 2. The 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, See. I 3. The measure of- an angle is the arc of a circle, contained between the two lines... ## The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817
...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. The angles are measured by the number of degrees cut off from the circle, by the lines which... 