| Caleb Alexander - 1813 - 144 páginas
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and **each degree, into 60 equal parts, called minutes;...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,... | |
| John Lee Comstock - 1813 - 340 páginas
...constellation, and near trfB star a. 762. Each of the 12 signs of the zodiac is divided into 30 smaller **parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60** parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having... | |
| Friedrich Christian Accum - 1813 - 396 páginas
...the circumference of a circle is the standard of comparison. This circle, of whatever size it may be, **is supposed to be divided into 360 equal parts, called degrees ; each degree** is again subdivided into 60 equal parts, called minutes, and every minute is subdivided into 60 seconds... | |
| John Gummere - 1814 - 346 páginas
...of a plane triangle, except the three angles, are given, the others are determined. 2. The periphery **of every circle is supposed to be divided into 360...degree into 60 equal parts, called minutes ; and each** minnte into 60 equal parts, called seconds, &c. 3. The measure of an angle is the arc of a circle,... | |
| Jedidiah Morse - 1814 - 670 páginas
...and the diameter is equal to two radii, or the longest straight line, that can be drawn in a circle. **The circumference of every circle is supposed to be...equal parts, called degrees ; each degree into 60** minutes ; each minute into 60 seconds. An arc of a circle is the measure of an angle. Thus a right... | |
| Charles Butler - 1814
...angle. It is usual to divide the whole circumference into 360 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 - 1814 - 508 páginas
...circumference into t wo equal parts, called semicircles; and isdoublethe radius, as AB or DE. fig. 8. 16. **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,... | |
| Jeremiah Day - 1815 - 96 páginas
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, **is supposed to be divided into 360 equal parts called degrees, each degree into 60** minutes, each mintite into 60 seconds? each second into 60 thirds, fkc. marked with the characters... | |
| Jeremiah Day - 1815 - 126 páginas
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, **is supposed to be divided into 360 equal parts called degrees, each degree into 60** minutes, each minute into 60 second?. each second into 60 thirds, &c. marked with flie characters °,... | |
| John Dougall - 1815 - 476 páginas
...-complement, or shortrv, the co-sine of the ar<j В S. The circumference of the globe of the earth being **divided into 360 equal parts called degrees, each degree into 60 equal parts called** nantîtes, each minute into OU equal part« called seconds, each second into (Hi equal parts called... | |
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