 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, etc.  The shipwright's vade-mecum [by D. Steel]. - 25 ページDavid Steel 著 - 1805全文表示 - この書籍について
 | Joseph Robertson - 1785 - 198 ページ
...fouth. NL 4°. 5'. ft. North latitude, four degrees, 5 minutes, 7 feconds. Every circle is fuppofed to be divided into 360 parts, called degrees ; each degree, into 60 other parts, called minutes ; each minute, into 60 feconds ; each fecond, into thirds, &c. The 0 at... | |
 | 1801 - 446 ページ
...the two sides, that, which stands at the angular point, is rend in the middle. C 56. The 39° 5 6. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into do seconds, and so... | |
 | Abel Flint - 1804 - 226 ページ
...the Centre ; and it divides the Circle into two equal parts, called Semicircles ; as AB or DE. 14. 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... | |
 | Robert Gibson - 1806 - 486 ページ
...circumference into two equal parts called semicircles ; and is double the radius, as AB or DE. fig. 8. • 18. 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... | |
 | Thomas Noble - 1809 - 94 ページ
...lines of chords may be easily found upon it. t An Arc of a circle is always the measure of an angle. Every circle is supposed to be divided into 360 parts called degrees, marked thus! A right angle contains yo°. IX. To divide a Line into two Parts proportional to two other... | |
 | Thomas Keith - 1810 - 478 ページ
...thus the arc *c is the measure of the angle aBC and the arc DE is the measure of the angle ABC. (H) 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 equal... | |
 | Charles Hutton - 1811 - 406 ページ
...and the other two on the two sides, that which stands at the angular point is read in the middle. 57. The circumference of every circle is supposed to be divided into 360 equnl parts, called Degrees : and each degree into 60 Minutes, each minute into 60 Seconds, and so... | |
 | Robert Gibson - 1811 - 580 ページ
...circumference into two equal 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 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into... | |
 | George Adams - 1813 - 576 ページ
...arch. Any right line drawn from the centre to the circumference of a circle, is called a radius. AH the radii of the same circle are equal. The circumference of every circle is supposed to be divided intoSfiO equal parts, called degrees; each degree into 60 equal pacts, called minutes, &c. A quadrant... | |
 | Jedidiah Morse - 1814 - 696 ページ
...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 divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of... | |
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