 | John Bonnycastle - Geometry - 1829 - 256 pages
...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 is an arc of a circle contained between the two lines... | |
 | James Hale - Surveying - 1829 - 124 pages
...Supplement of the Arch FA. Fig. 10. 28. The Circumference of every Circle is supposed to be divided into 300 equal parts, called Degrees ; each Degree into 60 equal parts, called Minutes ; and these into Thirds, &,c. 29. The measure of an Angle is the Arch of a Circle contained between two Lines... | |
 | John Playfair - Geometry - 1829 - 210 pages
...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 angle, being measured by a quadrant contains 90... | |
 | Charles Davies - Surveying - 1830 - 318 pages
...For the purposes of trigonometrical calculations, the circumference of the circle is supposed to be divided into 360 equal parts, called degrees ; each...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... | |
 | Adrien Marie Legendre - Geometry - 1830 - 344 pages
...of trigonometrical calculations, the circumference of the circle is conceived to be divided into 36O equal parts, called degrees ; each degree into 60...and each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two right angles, contains 1 80 degrees ; the quarter of the... | |
 | Francis Joseph Grund - Geometry, Plane - 1830 - 274 pages
...arcs of circles, described with any radius between their legs. The circumference is for this purpose divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend... | |
 | Ira Wanzer - Arithmetic - 1831 - 408 pages
...used by Astronomers, Navigators, &c. Note 2. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; each minute into 60 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular... | |
 | John Lee Comstock - Physics - 1831 - 312 pages
...Constellation, and 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... | |
 | John Lee Comstock - Physics - 1832 - 308 pages
...another constellation, and near the star a. 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... | |
 | Joseph Allen - America - 1832 - 128 pages
...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... | |
| |
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. 
