| James Thomson - 1827
...circle be divided into 360 equal parts, each of them is called a degree. Each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called** * Geography is a description of the earth ; and is distinguished by different names, according to tha... | |
| Robert Simson - Trigonometry - 1827 - 513 pages
...meeting BA, BC, in A, C ; the arch AC is called the measure of the angle ABC. II. The circumference of a **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,... | |
| Montgomery Robert Bartlett - Education - 1828
...lines, A, C, I,, and B, C, E, divide the circle inUlour equal parts called quadrants. The circumference **of every circle, is supposed to be divided into 360...and each minute into 60 equal parts, called seconds;** and these into thirds, &c. Now, as all circles are not of the same magnitude, and as they are all divided... | |
| Adrien Marie Legendre - Geometry - 1828 - 316 pages
...CIRCUMFERENCE. I. For the purposes of trigonometrical calculations, the circumference of the circle is conceived **to be divided into 360 equal parts, called degrees...and each minute into 60 equal parts, called seconds.** The semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the... | |
| Thomas Kerigan - Nautical astronomy - 1828 - 664 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is **divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes** } each minute into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth... | |
| Samuel Putnam - Readers (Secondary) - 1828 - 300 pages
...poor and destitute. • ANGLE, a corner, formed usually by the meeting of two lines. The circumference **of every circle is supposed to be divided into 360 equal parts, called degrees.** A semi-circle, of course, contains li!0 degress, and a quadrant, or quarter of a circle, contains SO... | |
| John Bonnycastle - Geometry - 1829 - 252 pages
...hypothenuse; and the other two sides are called legs. PRACTICAL GEOMETRY. 21 D / -E B *47. The circumference **of every circle is supposed to be divided into 360...each degree into 60 equal parts, called minutes; and** so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two lines... | |
| Thomas Curtis - Encyclopedias and dictionaries - 1829
...sides are called the LEGS, or sometimes the base and perpendicular. Fig. 10. 40. The circumference **of every circle is supposed to be divided into 360 equal parts, called DEGREES,** and each degree into sixty MIMUTES, each minute into sixty SECOND, and so on. Hence a semicircle contains... | |
| James Hale - Surveying - 1829 - 115 pages
...Supplement of the Arch FA. Fig. 10. 28. The Circumference of every Circle is supposed to be divided into 300 **equal parts, called Degrees ; each Degree into 60 equal parts, called Minutes ; and** these into Thirds, &,c. 29. The measure of an Angle is the Arch of a Circle contained between two Lines... | |
| John Playfair - Geometry - 1829 - 186 pages
...Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees, and **each degree into 60 equal parts, called minutes, and each minute into** £0 equal parts, called seconds, &c. Hence a right angle, being measured by a quadrant contains 90... | |
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