| Robert Simson - 1827 - 513 sider
...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...and 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,... | |
| 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... | |
| Montgomery Robert Bartlett - 1828
...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;** and these into thirds, &c. Now, as all circles are not of the same magnitude, and as they are all divided... | |
| Adrien Marie Legendre - 1828 - 316 sider
...calculations, the circumference of the circle is conceived 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.** The semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the... | |
| Abel Flint - 1830 - 284 sider
...semicircles ; as AB or DE. Fig. 5. 14. The circumference of every circle is supposed to be divided **into 360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called seconds** ; and these into thirds, &c . NOTE. Since all circles are divided into the same number of degrees,... | |
| Charles Davies - 1830 - 306 sider
...calculations, the circumference of the 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.** 26. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices... | |
| John Lee Comstock - 1831 - 295 sider
...near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj 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... | |
| Joseph Allen - 1832 - 116 sider
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.** Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... | |
| Euclid, Robert Simson - 1835 - 513 sider
...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...and each minute into 60 equal parts called seconds,** &c. A degree is marked thus, ° ; a minute thus, ' ; a second thus,"; and so on: for example, 57°... | |
| Abel Flint - 1835 - 334 sider
...semicircles ; as AB or DE. Fig. 5. 14. The circumference of every circle is supposed to be divided **into 360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called seconds** ; and these into thirds, &c. NOTE. Since all circles are divided into the same number of degrees, a... | |
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