 | Joseph Emerson Worcester - 1822 - 354 σελίδες
...ecli^tc, and the two colurvs. equal parts. These are four, the two tropics, and (he two polar circles. The circumference of every circle is supposed to be...; each degree into 60 equal parts, called minutes ; and each minute into 00 equal parts, called seconds. They are marked thus, 23° 28' 16" ; i- e. 33... | |
 | Anthony Nesbit, W. Little - 1822 - 916 σελίδες
...part of a circle, as ADC. " *fi. A sector is any part of a circle bounded by an arc sad two radii. 47. The circumference of every circle is supposed to be...; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds, &c. 48. The arc of a quadrant contains 90 degrees,... | |
 | Sidney Edwards Morse - 1822 - 706 σελίδες
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of a circle is part of its circumference. All angles... | |
 | Sidney Edwards Morse - 1822 - 706 σελίδες
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...equal parts, called degrees ; each degree into 60 minutes ; each minute into GO seconds. An arc of a circle is part of its circumference. All angles... | |
 | Rev. John Allen - 1822 - 508 σελίδες
...called acute.* * Mathematicians have supposed the whole circumference of a circle to be divided in 360 equal parts, called degrees, each degree into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds, Stc. and a circle being described from the vertex... | |
 | William Jillard Hort - 1822 - 308 σελίδες
...and in more modern times, Napier, the inventor of logarithms, and Briggs. In plane trigonometry, the circle is supposed to be divided into 360 equal parts, called degrees ; every degree into 60 equal parts, called minutes ; every minute into 60 equal parts, called seconds... | |
 | James M'Intire - 1823 - 232 σελίδες
...every circle is supposed to be 'ilvided into 36(1 ei(UHl parts, called decrees; each degive mto CO equal parts, called minutes; each minute into 60 equal parts, called seconds; and so on. sun comes to it, the days and nights are equal all over the world. 1 1 . The Ecliptic is... | |
 | Anthony Nesbit - 1824 - 476 σελίδες
...part of a circle, as ADC. 46. A sector is any part of a circle bounded by an arc and two radii. 47. The circumference of every circle is supposed to be...; each degree into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. 48. The arc of a quadrant contains 90 degrees,... | |
 | Jeremiah Day - 1824 - 440 σελίδες
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c. marked with the characters °,... | |
 | George G. Carey - 1825 - 274 σελίδες
...still be in the plane of the circle. 8. Degrees, fyc. — All circles, whether great or small, are supposed 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, &c.f 9. An Angle is the inclination of two lines... | |
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The circumference of every circle is supposed 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. 
