| Albert Newton Raub - 1894 - 192 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... | |
| Edward Brooks - 1895 - 415 páginas
...circumference is called a quadrant. 241. 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. 242. Any angle having its vertex at the centre is measured... | |
| Edward Brooks - 1895 - 239 páginas
...point within called the centre. 3. 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. 4. Any angle at the centre, as BCD, is measured by the... | |
| George Washington Hull - 1895 - 352 páginas
...quadrant. An Arc is any part of a circumference. For convenience of measuring 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. TABLE. 60 seconds (") = 1 minute, '. 60 minutes = 1 degree,... | |
| George D. Pettee - 1896 - 253 páginas
....-.theirlimits=J 175. Sen. Both the circumference of a circle and the angular space about the centre are divided **into 360 equal parts called degrees, each degree into 60 equal parts called minutes,** and each minute into CO equal parts called seconds. Since central angles vary as their intercepted... | |
| International Correspondence Schools - 1900 - 637 páginas
...circumference being at the vertex of the angle. For measuring angles, the circumference is divided into :i60 **equal parts. called degrees; each degree into 60 equal parts called minutes.** A quadrant is one-fourth the circumference of a circle, or 90°. The complement of an arc is 90° minus... | |
| Walter Nelson Bush, John Bernard Clarke - 1905 - 355 páginas
...may be stated thus : A central angle is measured by its intercepted arc. The 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. For brevity, an angle measured by an arc of 1°... | |
| Sidney Luxton Loney - 1905 - 290 páginas
...inconvenient unit of measurement on account of its size. We therefore subdivide a right angle into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** and each minute into 60 equal parts called seconds. The symbols used for a degree, a minute, and a... | |
| Henry Sinclair Hall - 1908 - 138 páginas
...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 O from the... | |
| George E. Mercer - 1909
...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 parts called minutes,** and each minute into 60 equal parts called seconds. jJ5 of a circumference is called 1 degree of arc.... | |
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