| 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... | |
| 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... | |
| 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... | |
| Daniel Adams - Geography - 1821 - 354 pages
...degree of a great circle of the earth contains 60 geographical, 91 ti9f English miles. Each degree is **divided into 60 equal parts, called minutes; and each minute into 60** seconds. Degrees are usually marked with a small cypher over them (°), minutes with one dash ('),... | |
| Anthony Nesbit, W. Little - Measurement - 1822 - 916 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,** &c. 48. The arc of a quadrant contains 90 degrees, which is the measure of a right angle. 49. An ellipse... | |
| William Jillard Hort - 1822 - 308 pages
...CH. 2. If the circumference of a circle 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** ; and so on ; then, as many degrees, minutes, and seconds, &c. as are in any arch ; so many degrees,... | |
| Rev. John Allen - Astronomy - 1822 - 508 pages
...supposed the whole circumference of a circle to be divided in 360 equal parts, called degrees, each degree **into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds,** Stc. and a circle being described from the vertex of an angle, as a centre, an angle is said to be... | |
| Rev. John Allen - Astronomy - 1822 - 516 pages
...supposed the whole circumference of a circle to be divided in 360 equal parts, called degrees, each degree **into 60 equal parts, called minutes and each minute into 60 equal parts,** cal:ed seconds, &c. and a circle being described iron) the vertex of an angle, as a centre, an angle... | |
| |