| William Frothingham Bradbury - 1872 - 238 páginas
...of methods of computing plane angles and triangles. 17. The circumference of every circle is dividad **into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes** ( ' ), and each minute into 60 equal parts, called seconds ( " ). 18. As angles at the centre valy... | |
| Benjamin Greenleaf - 1876 - 170 páginas
...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, minutes,... | |
| Edward Brooks - 1877 - 542 páginas
...circumference is called a quadrant. 399. 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 <50 equal parts called seconds. 400. Any angle having its vertex at the centre, is measured... | |
| Edward Brooks - 1877 - 230 páginas
...circumference is called a quadrant. , 290. 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. 291. Any angle having its vertex at the centre, is measured... | |
| Edward Brooks - 1877 - 421 páginas
...circumference is called a quadrant. * 290. 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. 2O1. Any angle having its vertex at the centre, is measured... | |
| Edward Brooks - 1877 - 421 páginas
...circumference is called a quadrant. 290. 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 GO equal parts, called seconds. 291. Any angle having its vertex at the centre, is measured... | |
| Albert Newton Raub - 1877 - 164 páginas
...and limited by the circumference, as AD, is called a Diameter. 129. Every circumference is divided **into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** and each minute into 60 equal parts, called seconds. TABLE. 60 seconds ( " ) =1 minute, ( ' ). 60 minutes... | |
| James Rosser - 1877
...portion (long or short) of the circumference, as AF, or B r. The circumference of every circle is divided **into 360 equal parts, called DEGREES ; each degree into 60 equal parts called minutes,** and each minute into 60 equal parts called seconds; which are respectively marked ° ' ". (See p. 1,... | |
| Rolla Rouse - 1879
...abdc). 20. For comparing the arc of an angle with a circumference, the latter is taken 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 ; a right angle containing 90 degrees, and a semicircle... | |
| George Woolworth Colton, Joseph Hutchins Colton - 1880 - 148 páginas
...unequal parts. 4. For the purpose of measurement, every circle is conceived to be divided into 3(30 **equal parts called Degrees ; each degree, into 60 equal parts called minutes;** and each minute, into GO equal parts called Seconds. Degrees are marked °, minutes ', seconds ''.... | |
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