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" into 360 equal parts, called degrees ; each degree being divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, &c. "
Course of Civil Engineering: Comprising Plane Trigonometry, Surveying, and ... - Page ix
by John Gregory - 1842
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1810 - 554 pages
...circumference of a 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, &c. And as many degrees, minutes, seconds, 8cc. as are contained in any arch, of so many degrees, minutes,...
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Trigonometry, Plane and Spherical: With the Construction and Application of ...

Thomas Simpson - 1810 - 152 pages
...periphery of every circle is supposed to be divided into 36O equal parts, called degrees; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, or second minutes, &c. 3. Any part AB (fig. 1.) of the periphery of the circle is called an arch, and...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1813 - 212 pages
...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. Note. Since all Circles are divided into the same number of Degrees, a Degree...
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A New and Complete System of Arithmetic: Intended for the Use of Schools and ...

Caleb Alexander - 1813 - 152 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degreeģ; and each degree, into 60 equal parts, called minutes; and each minute, into 60 equal parts, called seconds, and these into thirds, fourtUs, &c. 15 A figure, having three equal sides, is called an eqvilaterti...
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An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - 1814 - 528 pages
...usual to divide the whole circumference into 360 equal parts called degrees, to subdivide each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, &c. wherefore, if an angle at the centre be subtended by an arc which consists of suppose 3O degrees, that...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814 - 556 pages
...circumference of a circle is supposed to be divided into 360 equal part* called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1814 - 562 pages
...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 tiiese into thirds, fourths, &c. these parts being greater or less as the radius is.17. A chord...
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The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817 - 306 pages
...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 angles are measured by the number of degrees cut off from the circle, by the lines which form the...
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A Treatise on Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1818 - 500 pages
...periphery 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 ; &c. 3. Any part of the periphery, is calledlan arch; and is the measure of the angle at the centre, which...
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Geometrical Problems Deducible from the First Six Books of Euclid, Arranged ...

Miles Bland - 1819 - 444 pages
...agreed to divide the circumference of the circle into 360 equal parts called Degrees ; each degree into 60 equal parts called Minutes ; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence...
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