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 Βιβλία Βιβλία The Circumference of every circle is supposed to be divided into 360 equal parts, called Degrees ; and each degree into 60 Minutes, each minute into 60 Seconds, and so on. The Theory and Practice of Surveying: Containing All the Instructions ... - Σελίδα 39
των Robert Gibson - 1814 - 508 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## A treatise of practical mensuration

Anthony Nesbit - 1824 - 434 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 divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.... ## The complete servant, by Samuel and Sarah Adams

...is J3. ,\ Gross is 12 Dozen, or 144 A Pace is 3 Feet or a Yard. Mathematicians conceive every Circle to be divided into 360 equal Parts, called Degrees, and each Degree into 60 equal parts, called Seconds, and each Second subdivided into 60 smaller parts, called thirds, and so on. The Diameter of... ## An Introduction to the Theory and Practice of Plain and Spherical ...

Thomas Keith - 1826 - 442 σελίδες
...thus the arc ac is the measure of the angle авс and the arc DE is the measure of the angle ABC. (H) The circumference of every circle is supposed to be divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. The... ## A New Treatise on the Use of the Globes: Or, A Philosophical View of the ...

Thomas Keith - 1826 - 334 σελίδες
...1820, is 14° 13' 7" ; and its declination 88° 20' 55" N. Connoissance des Terns, for 1820, p. 168. t Every circle is supposed to be divided into 360 equal parts called degrees ; each minute, into 60 equal parts called seconds, &c. : (a degree therefore is of different lineal... ## A New Treatise on the Use of the Globes with Notes and Observations ...

James M'Intire - 1826 - 215 σελίδες
...which the sun describes by his annual progress in the heavens. The ecliptic cuts the equator in an •The circumference of every circle is supposed to be divided into 360 equal jjarts, called degrees; each degree into sixty equal parts, called minutes; each minute into sixty... ## An Elementary Treatise on Arithmetic, in Theory and Practice: Adapted to the ...

James Ryan - 1827 - 272 σελίδες
...are there between the 17th of March and the 25th of December ? Ans. 283. Division of the Circle. 47. The circumference of every circle is supposed to be divided into 360 equal parts called degrees — each degree is subdivided into 60 equal parts called minutes — each minute into 60 equal parts... ## Sequel to The Analytical Reader: In which the Original Design is Extended ...

Samuel Putnam - 1828 - 300 σελίδες
...greater part are poor and destitute. • ANGLE, a corner, formed usually by the meeting of two lines. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees. A semi-circle, of course, contains li!0 degress, and a quadrant, or quarter of a circle, contains SO... ## The Common School Manual: A Regular and Connected Course of Elementary ...

...7. The right lines, A, C, I,, and B, C, E, divide the circle inUlour equal parts called quadrants. 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;... ## Elements of Geometry: Being Chiefly a Selection from Playfair's Geometry

John Playfair - 1829 - 186 σελίδες
...will be the proper measure of the angle BGC. Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees,...equal parts, called minutes, and each minute into £0 equal parts, called seconds, &c. Hence a right angle, being measured by a quadrant contains 90... ## The London Encyclopaedia: Or, Universal Dictionary of Science, Art ..., Τόμος 10

Thomas Curtis - 1829
...and the oilier two sides are called the LEGS, or sometimes the base and perpendicular. Fig. 10. 40. The circumference of every circle is supposed to be...equal parts, called DEGREES, and each degree into sixty MIMUTES, each minute into sixty SECOND, and so on. Hence a semicircle contains 180 degrees, and...