 | Isaac Hammond Morris - 1890 - 440 σελίδες
...PROBLEM 24. — To construct an angle containing a given number of degrees. The circumference of a circle is supposed to be divided into 360 equal parts, called degrees. The radius of a circle may be set off exactly six times round the circumference ; hence, if an arc... | |
 | Thomas Baker - 1891 - 262 σελίδες
...the arc FE, will be the sector of a circle. 27. The circumference of every circle is supposed to bo divided into 360 equal parts, called degrees, and each degree into 60 minutes, each minute into 60 seconds, &c. Hence a semicircle contains 180 degrees, and a quadrant 90... | |
 | Horatio Nelson Robinson - 1892 - 428 σελίδες
...times are 4 bu. 3 pk. 2 qt. contained in 336 bu. 3 pk. 4 qt. ? Ans. 70 times. LONGITUDE AND TIME. 224. Every circle is supposed to be divided into 360 equal parts, called degrees. Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
 | Horatio Nelson Robinson - 1892 - 428 σελίδες
...the size of each farm ? Ans. 106 A. 106 P. 20 sq. yd. 1 sq. ft. 72 sq. in. LONGITUDE AND TIME. 224:. Every circle is supposed to be, divided into 360 equal parts, called degrees. Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
 | Henry Bartlett Maglathlin - 1893 - 234 σελίδες
...circle is any straight line drawn through the center, and terminated by the circumference, as AE. 173. The circumference of every circle is supposed to be divided into 360 equal parts, called Degrees. A Quadrant is a fourth of a circumference, or an are of 90 degrees, as AB. 174. The Angle ACB, whose... | |
 | Asa Hollister Craig - 1897 - 538 σελίδες
...circle. 88. The standard unit of time is the day. This is determined by the revolution of the earth. 91. Every circle is supposed to be divided into 360 equal parts called degrees. As the earih makes its revolution once in 21 hours, the 24 hours must equal 3 ' i0 P , or one hour... | |
 | Gardner Chace Anthony - 1894 - 190 σελίδες
...circle is called a semi-circle, as the area ABEG D. A Quadrant is the fourth part of a circle, as BC G. Every circle is supposed to be divided into 360 equal parts, called degrees, which are used as a measure of angles; therefore the arc of a semi-circle is equal to 180°. The arc... | |
 | Robert Griffith Hatfield - 1895 - 774 σελίδες
...499, obtuse angle)— then each of the two angles is called a right angle. 327. — Definition. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; hence a semicircle contains 180 degrees, a quadrant 90, etc. CBD FIG. 250. 328. — Definition. —... | |
 | George D. Pettee - 1896 - 272 σελίδες
...of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into CO equal parts called seconds. Since central angles vary as their intercepted arcs, any central angle... | |
 | 1897 - 672 σελίδες
...the unknown parts from the given parts is called the solution of the triangle. 741. In Trigonometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; every degree is subdivided into GO equal parts, called minutes, and every minute is again divided... | |
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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 60 Seconds, and so on. 
