| Horatio Nelson Robinson - 1892 - 416 páginas
...times are 4 bu. 3 pk. 2 qt. contained in 336 bu. 3 pk. 4 qt. ? Ans. 70 times. LONGITUDE AND TIME. 224. **Every circle is supposed to be divided into 360 equal parts, called degrees.** Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
| William Benjamin Smith - 1892 - 143 páginas
...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... | |
| William Benjamin Smith - 1892 - 297 páginas
...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 minutes primae), each minute into 60 equal seconds (partes minutse secundci), denoted... | |
| William Shaffer Hall - 1893 - 62 páginas
...convenient unit is a right angle. The right angle is divided into 90 equal parts called degrees, and **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** Angles at the centre of a circle have the same ratio as the arcs which are subtended by them (Ww. Geom.,... | |
| Henry Bartlett Maglathlin - 1893 - 224 páginas
...circle is any straight line drawn through the center, and terminated by the circumference, as AE. 173. **The circumference of every circle is supposed to be divided into 360 equal parts, called Degrees.** A Quadrant is a fourth of a circumference, or an are of 90 degrees, as AB. 174. The Angle ACB, whose... | |
| Asa Hollister Craig - 1897 - 524 páginas
...circle. 88. The standard unit of time is the day. This is determined by the revolution of the earth. 91. **Every circle is supposed to be divided into 360 equal parts called degrees.** As the earih makes its revolution once in 21 hours, the 24 hours must equal 3 ' i0 P , or one hour... | |
| William Benjamin Smith - 1893 - 297 páginas
...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 minutte primse), each minute into 60 equal seconds (partes minutse secundtz), denoted... | |
| Albert Newton Raub - 1894 - 192 páginas
...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...and each minute into 60 equal parts, called seconds.** TABLE. 60 seconds (") =1 minute, (' ). 60 minutes = 1 degree, ( ° ). 30 degrees = 1 sign, s. 12 signs... | |
| Nathan Fellowes Dupuis - 1894 - 294 páginas
...practical purposes 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.** 20 seconds and six-sevenths of a second, follows :— 51° 25' 42f". This is denoted as 42°. Theorem... | |
| Gardner Chace Anthony - 1894 - 98 páginas
...circle is called a semi-circle, as the area ABEG D. A Quadrant is the fourth part of a circle, as BC G. **Every circle is supposed to be divided into 360 equal parts, called degrees,** which are used as a measure of angles; therefore the arc of a semi-circle is equal to 180°. The arc... | |
| |