| Benjamin Greenleaf - Geometry - 1861 - 638 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts culled seconds ; then an angle is expressed by the number of degrees,... | |
| Benjamin Greenleaf - Geometry - 1862 - 518 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
| Olinthus Gregory - 1863 - 482 pages
...(See the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible **into. 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** each of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions.... | |
| William Frothingham Bradbury - Plane trigonometry - 1864 - 324 pages
...from a point within, called the centre ; as ABD E. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees (°),...and each minute into 60 equal parts, called seconds** ( "). 34. The RADIUS of a circle is a line drawn from the centre to the circumference ; as C B. All... | |
| C. Davies - 1867 - 342 pages
...GEOMETRYDefinitions 28 The circumference of a circle is used for the measurement of angles- For this purpose it **is divided into 360 equal parts called degrees, each degree into 60 equal parts called** ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked... | |
| Asa Smith - 1868 - 84 pages
...— The boundary of a circle. The circumference of every circle ˇв supposed to be divided into and **equal parts, called degrees ; each degree into 60...and each minute into 60 equal parts, called seconds.** Circumpolar Start.— Those stars which revolve around the pole without passing below the horizon.... | |
| Charles Davies, Adrien Marie Legendre - Geometry - 1869 - 470 pages
...the quadrant is divided into 90 equal parts, each of which k called a degree ; each degree into 00 **equal parts, called minutes ; and each minute into 60 equal parts, called seconds.** Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7° 22' 33",... | |
| Benjamin Greenleaf - 1869 - 516 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
| Anthony Nesbit - 1870 - 578 pages
...certain point within it, called the centre. 39. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees; each...and each minute into 60 equal parts, called seconds.** 40. The diameter of a circle is a right line drawn through the centre, A and terminating in the circumference... | |
| Dana Pond Colburn - 1871 - 392 pages
...1vge or small, is supposed to be divided into 360 equal pwrtsf called degrees. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called** čeconds. (g.) A degree is to be regarded simply as the 860th part of the circumference of the circle... | |
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