| 1907
...measuring arc is a part is divided into 360 equal parts, called degrees; each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds.** The magnitude of an angle is then expressed by the number of degrees, minutes, and seconds that its... | |
| William A. Radford - 1907
...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... | |
| Henry Sinclair Hall - 1908
...which it is perpendicular to AB. (ii) All right angles are equal. A right angle is divided into 90 **equal parts called degrees (°) ; each degree into 60 equal parts called minutes** (') ; each minute into 60 equal parts called seconds ("). In the above figure, if OC revolves about... | |
| George E. Mercer - 1909 - 294 páginas
...circumference is an arc. A to B and B to C are arcs. The circumference of every circle is divided into 300 **equal parts called degrees, each degree into 60 equal...and each minute into 60 equal parts called seconds.** jJ5 of a circumference is called 1 degree of arc. J of a circumference, or 90 degrees, is called a... | |
| William A. Radford, Alfred Sidney Johnson - 1909
...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... | |
| Nehemiah Hawkins - 1910 - 537 páginas
...strain. Degeneration of Energy. — The deterioration or weakening of energy or force. Degrees. — **The circumference of every circle is supposed to be divided into 360 equal parts, called degrees;** thus, a degree is jJijth of the circumference of any circle. A degree is divided into 60 parts called... | |
| Charles H. Gleason - 1910
...scale of J in. to 1 ft. MEASUREMENT OF ANGLES 324. The circumference of every circle, large or small, **is supposed to be divided into 360 equal parts, called degrees (°); each degree into 60** minutes ('); and each minute into 60 seconds ("). Thus: the circumference of the circle ABCD = 360°.... | |
| John William Hopkins, Patrick Healy Underwood - 1912
...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... | |
| Glenn Moody Hobbs - 1912
...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... | |
| Frederick Thomas Hodgson - 1913
...materially in understanding other problems. The circumference of every circle is measured by being **supposed to be divided into 360 equal parts, called degrees; each degree** containing 60 minutes, a smaller division, and each minute into 60 seconds, a still smaller division.... | |
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