| 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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