| Eugene Randolph Smith - Geometry, Plane - 1909 - 204 pages
...numerical calculations, a perigon is divided into 360 equal parts, called degrees; each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** 73. How many degrees are there in an interior angle of a regular polygon of 15 sides? of n-sides? 74.... | |
| William A. Radford, Alfred Sidney Johnson - Architecture - 1909 - 384 pages
...divided by mathematicians into 360 equal parts, called degrees ; each degree being again subdivided **into 60 equal parts, called minutes, and each minute into 60 equal parts called seconds.** Hence, it follows that the arc of a quarter circle or quadrant includes 90 degrees; that is, one-fourth... | |
| Eugene Randolph Smith - Geometry, Plane - 1909 - 424 pages
...How many sides has the polygon each of whose interior angles is six sevenths of a straight angle ? **60 equal parts called minutes, and each minute into 60 equal parts called seconds.** 73. How many degrees are there in an interior angle of a regular polygon of 15 sides? of n-sides? 74.... | |
| John William Hopkins, Patrick Healy Underwood - Arithmetic - 1912 - 406 pages
...units. The whole circumference is divided into 360 equal parts called degrees. Each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. As** one degree is ^^ of any circumference, a degree on one circle is not of the same size as a degree on... | |
| Glenn Moody Hobbs - 1912 - 100 pages
...protractor, Fig. 14, showing degrees and fractions of degrees, is necessary. Each degree is divided **into 60 equal parts called minutes, ', and each minute into 60 equal parts called seconds,** ". Thus to represent an angle of 23 degrees, 47 minutes, and 9 seconds, write 23° 47' 9". The relations... | |
| Claude Irwin Palmer, Charles Wilbur Leigh - Plane trigonometry - 1914 - 308 pages
...turning. The right angle is divided into 90 equal parts called degrees (°), each degree is divided **into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds** ("). Starting from any position as initial side, it is evident that, for each position of the terminal... | |
| George E. Mercer, Mabel Bonsall - Arithmetic - 1914 - 324 pages
...circumference of every circle is divided into 360 equal parts called degrees, each degree into i50 **equal parts called minutes, and each minute into 60 equal parts called seconds.** 5J^ of a circumference is called 1 degree of arc. J of a circumference, or 90 degrees, is called a... | |
| Harmon Bay Niver - Geography - 1915 - 418 pages
...matter what size it may be, is divided into 360 equal parts called degrees. Each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** The Equator and the meridian circles are called great circles, because they divide the earth into hemispheres.... | |
| Nathaniel Bowditch - Nautical astronomy - 1916 - 912 pages
...to have their circumferences divided into 360 ecjual parts, called degrees; each degree is divided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds;** an arc is measured by the number of degrees, minutée, and seconds that it contains. . v , apply i... | |
| Claude Irwin Palmer, Charles Wilbur Leigh - Logarithms - 1916 - 348 pages
...turning. The right angle is divided into 90 equal parts called degrees (°), each degree is divided **into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds** (")• Starting from any position as initial side, it is evident that, for each position of the terminal... | |
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