 | Charles Hutton - 1807 - 464 páginas
...before observed in Geom. Def. 56) is supposed to be divided into 360 equal parts, called Degrees; also each degree into 60 Minutes, •each minute into 60 Seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 3. The Measure of an angle (Def.... | |
 | Samuel Webber - 1808 - 466 páginas
...circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees, 57. The measure of a rightlined... | |
 | Euclid - 1810 - 554 páginas
...circle ACF be described 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... | |
 | Charles Hutton - 1811 - 406 páginas
...circumference of every circle is supposed to be divided into 360 equnl parts, called Degrees : and each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is... | |
 | Charles Butler - 1814 - 582 páginas
...point being the centre. 4. H has already been observed (Art. 23?. part 8.), that the wkJe circumference is supposed to be divided into 360 degrees, each degree into 60 minutes, each minute into 60 Seconds, &c. ; % many degrees, minutes, and seconds therefore, as are contained in the arc intercepted between... | |
 | Charles Butler - 1814 - 528 páginas
...calculated to the nearest unit '. s la the early ages of Geometry the circumference of the circle was divided into 360 degrees, each degree into 60 minutes, each minute into CO seconds, &c. ; this method was adopted by the moderns, and still prevails among the English, and... | |
 | John Lathrop - 1821 - 206 páginas
...artificial globe turns, and is divided into 360 equal parts, called degrees.—[Fig. 1.] 48. Every circle is supposed to be divided into 360 degrees; each degree into 60 minutes, and each minute into GO seconds. 49. A degree of a great circle in the heavens is a space nearly equal... | |
 | Charles Hutton - 1822 - 616 páginas
...before observed in Geom. Def. 67) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 100 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def.... | |
 | Robert Simson - 1827 - 546 páginas
...ACF be described, 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... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, Henry Vethake - 1829 - 644 páginas
...sides of the angle meet, the vertex, as it is called in geometry. Every circle, large or small, is divided into 360 degrees, each degree into 60 minutes, each minute into 60 seconds. It is, therefore, clear, that the size of the angle has nothing to do with the length of the lines,... | |
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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 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 
