 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.  Putnam's Arithmetic - Σελίδα 214των Rufus Putnam - 1849 - 264 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | 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 Washington Hull - 1895 - 404 σελίδες
...quadrant. An Arc is any part of a circumference. For convenience of measuring the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds. TABLE. 60 seconds (") = 1 minute, '. 60 minutes... | |
 | Edward Brooks - 1895 - 424 σελίδες
...the circumference is called a quadrant. 241. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 242. Any angle having its vertex at the centre is... | |
 | Edward Brooks - 1895 - 248 σελίδες
...from a point within called the centre. 3. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 4. Any angle at the centre, as BCD, is measured by... | |
 | George D. Pettee - 1896 - 272 σελίδες
....-.theirlimits=J 175. Sen. Both the circumference of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each...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... | |
 | International Correspondence Schools - 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... | |
 | H. Holt-Butterfill - 1897 - 232 σελίδες
...is a quadrant, and one half of it a semi-circle. For the measurement of angles, arcs, chords, etc., the circumference of every circle is supposed to be divided into 360 equal parts called degrees, which are indicated when speaking of them by attaching a small circle to the right of the number stated... | |
 | Edward Cornelius Toune, Graeme Mercer Adam - 1897 - 692 σελίδες
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of... | |
 | 1897 - 592 σελίδες
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of... | |
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