| Edward Brooks - Arithmetic - 1877 - 250 pages
...circumference is called a quadrant. , 290. For the purpose of measuring angles, the circumference is **divided into 360 equal parts, called degrees ; each...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 by the... | |
| Edward Brooks - Arithmetic - 1877 - 444 pages
...circumference is called a quadrant. 290. For the purpose of measuring angles, the circumference is **divided into 360 equal parts, called degrees ; each...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 by the... | |
| Edward Brooks - Arithmetic - 1877 - 438 pages
...circumference is called a quadrant. * 290. For the purpose of measuring angles, the circumference is **divided into 360 equal parts, called degrees; each...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 by the... | |
| Albert Newton Raub - Arithmetic - 1877 - 176 pages
...the centre 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... | |
| William Henry Rosser - 1877 - 158 pages
...any 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 - 402 pages
...circle (B 27, 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... | |
| Samuel Maunder - Encyclopedias and dictionaries - 1880 - 904 pages
...having a quarter of the circumference for its arc. The circumference of every circle is supposed to **be divided into 360 equal parts, called degrees, each degree into 60** minutes, and each minute into 80 seconds: hence я semicircle contains 180 degrees, andaquadrtnt 90... | |
| George Woolworth Colton, Joseph Hutchins Colton - Atlases - 1880 - 152 pages
...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 ''.... | |
| Evan Wilhelm Evans - Geometry - 1884 - 170 pages
...arc may be taken as the measure of its subtended angle. To this end the circumference is conceived to **be divided into 360 equal parts, called degrees, each degree into 60** minutes, and each minute into 60 seconds. Then, whatever number of degrees, etc., an arc contains,... | |
| William Benjamin Smith - Geometry, Modern - 1892 - 160 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is **divided into 360 equal parts called degrees, each degree into 60 equal** minutes (partes minutce primae), each minute into 60 equal seconds (partes minutae secunJiz), denoted... | |
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