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" Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. "
A Treatise on Land Surveying: Comprising the Theory Developed from Five ... - Pāgina 379
per William Mitchell Gillespie - 1855 - 524 pāgines
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A Compleat Treatise of Practical Navigation Demonstrated from It's First ...

Archibald Patoun - 1734 - 568 pāgines
...Circumference of every Circle is fuppofed to be divided into 360 equal Parts, called Degrees ; and each Degree is divided into 60 equal Parts, called Minutes ; and each Minute into 60 e?ual Parts, called Seconds; and 'thefe into Thirds, 'ourtbs, &c, thefe Parts being greater or lefs...
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A Complete Treatise of Practical Navigation, Demonstrated from It's First ...

Archibald Patoun - 1770 - 578 pāgines
...The'Circumference of every Circle is fuppofed to be divided into 360 'equal Parts,' called Degrees, and each Degree is divided into 60 equal Parts, called Minutes*, and each Minute into 6b equal Parts, called Seconds ; and thefe into Thirds, Fourths, &c. thefe Barīs tye'mg greater or...
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Elements of Trigonometry, Plane and Spherical: With the Principles of ...

John Wright (Mathematician) - 1772 - 298 pāgines
...fig. 4. is fuppofed to be divided into 360 equal parts, called degrees; each degree ifr fuppofed to be divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called feconds, &c. 5. Any angle HRB at the centre of a circle, is faid to be an angle...
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The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ...

Benjamin Donne - 1775 - 338 pāgines
...are a Semicircle, or 2 Rt. ŋ.s, and 90 Degrees a Quadrant, or Rt L. j) each Degree is fuppofed to be divided into 60 equal Parts, called Minutes, and each Minute into 60 equal Parts, called Seconds, &c. Hence it is plain, that in une' qual Circles, as well as in equal,...
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Exercises on the globes: interspersed with some historical, biographical ...

William Butler - 1803 - 434 pāgines
...and then to obferve the different altitudes of the fame ftar at the two extremities of that diftance. Each degree is divided into 60 equal parts called minutes ; and each minute into 60 feconds, Sec. Degrees are marked with a fmall cypher over them ("), minutes with one dam ( ), andfeeonds...
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A Plain Elementary and Practical System of Natural Experimental Philosophy ...

John Ewing - 1809 - 672 pāgines
...large or small, is supposed to be divided into 360 equal parts, which are called degrees, each degree into 60 equal parts called minutes, and each minute into 60 seconds, and so on in a sixagesimal division as far as you please. If the earth be supposed to turn round upon...
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A System of Universal Geography: For Common Schools: in which Europe is ...

Nathaniel Dwight - 1816 - 220 pāgines
...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 seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and passing...
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Geography: Or, A Description of the World

1820 - 352 pāgines
...any circle. A Degree of a great circle of the earth contains 60 geographical, Or 69$ English miles. Each degree is divided into 60 equal parts, called minutes ; and each minute into 60seconds. Degrees are usually marked with a small cypher over them (°), minutes with one dash ('),...
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Geography: Or, A Description of the World. In Three Parts. Part I ...

Daniel Adams - 1821 - 354 pāgines
...any circle. A degree of a great circle of the earth contains 60 geographical, 91 ti9f English miles. Each degree is divided into 60 equal parts, called minutes; and each minute into 60 seconds. Degrees are usually marked with a small cypher over them (°), minutes with one dash ('), and seconds...
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Easy Lessons in Geography and History: Designed for the Use of the Younger ...

Joseph Allen - 1832 - 128 pāgines
...globe, is divided into 360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Questions for Review. How many degrees are there in the circumference...
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