 | Robert Simson - 1827 - 546 páginas
...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, &c. And as many degrees,... | |
 | James Ryan - 1827 - 290 páginas
...are there between the 17th of March and the 25th of December ? Ans. 283. Division of the Circle. 47. The circumference of every circle is supposed to be divided into 360 equal parts called degrees — each degree is subdivided into 60 equal parts called minutes — each minute into 60 equal parts... | |
 | Samuel Putnam - 1828 - 314 páginas
...greater part are 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... | |
 | Montgomery Robert Bartlett - 1828 - 426 páginas
...7. The right 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 equal parts, called degrees; each degree into 60 equal parts called minutes; and each minute into 60 equal parts, called seconds;... | |
 | Thomas Curtis - 1829 - 814 páginas
...and the oilier two sides are called the LEGS, or sometimes the base and perpendicular. Fig. 10. 40. The circumference of every circle is supposed to be...equal parts, called DEGREES, and each degree into sixty MIMUTES, each minute into sixty SECOND, and so on. Hence a semicircle contains 180 degrees, and... | |
 | John Bonnycastle - 1829 - 256 páginas
...called the 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 equal parts, called degrees; each degree into 60 equal parts, called minutes; and so on. 48. The measure of any right-lined angle... | |
 | 1829 - 196 páginas
...MEASURING LAND. 386* TRIGONOMETRY is the art of measuring TRIANGLES. 38T* The PERIPHERY of every cirele is supposed to be divided into 360 equal parts, called DEGREES; and each degree into 60 other equal parts, called minutes, &c. * Tfiuse who would wish to pursue this study, cannot prrhaps... | |
 | John Playfair - 1829 - 210 páginas
...will be the proper measure of the angle BGC. 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... | |
 | Abel Flint - 1830 - 322 páginas
...centre; and it divides the circle into two equal parts, called semicircles ; as AB or DE. Fig. 5. 14. The circumference of every circle is supposed to be...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,... | |
 | Alexander Ingram - 1830 - 458 páginas
...angle, the sector is called a Quadrant; and if half a right angle, it is called an Octant. NOTE 2. The circumference of every circle is supposed to be...divided into 360 equal parts, called degrees, and a degree into 60 equal parts, called minutes, and a minute into 60 seconds, and so on. NOTE 3. If two... | |
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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, &c. 
