| John Dougall - 1810 - 580 páginas
...other four watches. In modern Europe the day is divided into 2* equal parts called hours, each hour **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** It has been found by experiment at London, in a spot elevated 113 feet above the level of the sea,... | |
| Robert Gibson - 1811 - 508 páginas
...parts, called semicircles ; and is double the radius, as AB or DE. fig. 8. m *!6. The circumference **of every circle is supposed to be divided into 360...called minutes, and each minute into 60 equal parts** caled seconds, and these into thirds, fourths, &c. these parts being greater or less as the radius... | |
| Caleb Alexander - 1813 - 144 páginas
...The 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
...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... | |
| Robert Gibson - 1814 - 508 páginas
...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...and each minute into 60 equal parts called seconds,** and tiiese into thirds, fourths, &c. these parts being greater or less as the radius is.17. A chord... | |
| Euclides - 1814
...of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal part* **called degrees, and each degree into 60 equal parts...each minute into 60 equal parts called seconds, &c.** And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,... | |
| 1814 - 227 páginas
...DE. and it is a chord to both segments of the circle, as DFE and DGE. 12. A Circle is actually, or **supposed to be divided into 360 equal parts, called...each degree into 60 equal parts, called Minutes ; and** these into seconds, &c. 13. An Angle is so many degrees, as lines drawn from the centre of a circle,... | |
| 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, that... | |
| Euclides - 1816 - 528 páginas
...called the measure of the angle ABC. II. The circumference of a circle is supposed to be divided fnto **360 equal parts called degrees, and each degree into...each minute into 60 equal parts called seconds, &c.** And as many degrees, minutes, seconds, &c. as are contained in any arc h, of so many degrees, minutes,... | |
| Nathaniel Dwight - 1816 - 213 páginas
...A. 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** seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and... | |
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