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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 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c. The First Six Books: Together with the Eleventh and Twelfth - Σελίδα 474
των Euclid - 1781 - 520 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - 1775 - 534 σελίδες
...meafure of the angle ABC. II. The circumference of a circle is fuppofed to be divided into H h ' 360 360 equal parts called degrees, and each degree into...60 equal parts called minutes, and each minute into 6e equal parts called feconds, &c. And as many degrees, minutes, feconds, &c as are contained in any... ## The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ...

Benjamin Donne - 1775 - 338 σελίδες
...Semicircle, or 2 Rt. ¿.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, equal Angles are fubtended... ## The Practical Navigator, and Seaman's New Daily Assistant: Being an Epitome ...

John Hamilton Moore - 1791 - 578 σελίδες
...ßooth Part of the Circumference of any Circle. All Circles, whether great or fmall, are divided into 360 equal Parts, called Degrees ; and each Degree...Minutes ; and each Minute into 60 equal Parts called Seconds, &c. A Semicircle is 180 Degrees, and a Quadrant contains 90 Degrees. A Right Angle contains... ## A Complete Treatise on Practical Mathematics: Including the Nature and Use ...

John McGregor (teacher of mathematics.) - 1792 - 532 σελίδες
...into right-angled and oblique-angled trigonometry. The circumference of any circle, is divided into 360 equal parts, called degrees, and each degree into...minutes, and each minute into 60 equal parts, called féconds, and fo on. JVi/f, Degrees are frequently marked °, and minutes '. Thus, 30 degrees, 14 minutes,... ## A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1795 - 384 σελίδες
...Radius, as AB cr DE. Fig. 8. 1 8. The Circumference of every Circle is fuppofed to be Divided into 360 equal Parts called Degrees, and each Degree into...Minutes, and each Minute into 60 equal Parts called Seconds, and thefe into Thirds, Fourths, &c. thefe Parts being greater or lefs as the Radius is. 19.... ## Trigonometry, Plane and Spherical: With the Construction and Application of ...

Thomas Simpson - 1799 - 92 σελίδες
...fome affigned number of equal parts. 2. The periphery of every circle is fuppofed to be divided into 360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called feconds, or fecond minutes, &c. ' B a 3- Any HK/ 3. Any part AB of the periphery of the circle is called an... ## A Complete System of Practical Arithmetic, with Various Branches in the ...

William Taylor (teacher of the mathematics.) - 1800 - 556 σελίδες
...called the Radius. 8. The circumference of every circle 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, &c. Any part of the the circumference is called an Arch. 9. The Chord of an arch, is a right... ## A Treatise of Algebra: Wherein the Principles are Demonstrated and Applied ...

Thomas Simpson - 1800 - 448 σελίδες
...circle is fuppofed to be divided into 360 equal parts, called degrees ; and each degree into 60 cgual parts, called minutes, and each minute into 60 equal parts, called feconds, or fccond minutes, &'c. Any part of the periphery is called an arch, and is ineafured by the number... ## The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - 1804 - 530 σελίδες
...called the meafure of the angle ABC. II. The circumference of a circle is fuppofed to be divided into 360 equal parts called degrees, and each degree into...feconds, &c. as are contained in any arch, of fo many degrees, mia nutes, feconds, &c. is the angle, of which that arch is the meafure, faid to be. CoR.... ## A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1804 - 226 σελίδες
...called Semicircles ; as AB or DE. 14. The. Circumference of every Circle is supposed to be Divided into 360 equal parts, called Degrees ; and each Degree...Minutes ; and each Minute into 60 equal parts, called Seconds ; jktl these into Thirds, &c. Ifote. .-Since all Circles are divided into the same number of...