 | Caleb Alexander - Arithmetic - 1813 - 152 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degreeģ; 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,... | |
 | Charles Butler - 1814 - 582 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,... | |
 | Robert Gibson - Surveying - 1814 - 562 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... | |
 | 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... | |
 | Euclides - 1816 - 592 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,... | |
 | John Gummere - Plane trigonometry - 1817 - 394 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... | |
 | Thomas Keith - 1817 - 306 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... | |
 | 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... | |
 | 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... | |
 | Thomas Simpson - Algebra - 1821 - 426 pages
...periphery 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, or second minutes, <Jc. Any part of the periphery is called an arch, and is measured by the number... | |
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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. 
