| Robert Griffith Hatfield - 1895 - 685 páginas
...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 - 352 páginas
...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 - 415 páginas
...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 - 239 páginas
...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 - 253 páginas
....-.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... | |
| H. Holt-Butterfill - 1897 - 211 páginas
...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... | |
| 1897
...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... | |
| 1897
...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... | |
| Edward Cornelius Toune, Graeme Mercer Adam - 1897
...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... | |
| Wilbur Fisk Nichols - 1898
...each flower-bed ? For all the flower-beds? For the lawn? MEASUREMENT OF ANGLES. 1. For convenience, **every circle is supposed to be divided into 360 equal parts called degrees.** 2. Вy means of an instrument called a protractor any angle can be measured. 3. From cardboard cut... | |
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