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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. "
Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ... - Page 26
by Charles Davies - 1872 - 592 pages
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An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1829 - 252 pages
...called legs. PRACTICAL GEOMETRY. 21 D / -E B *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 so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two lines...
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Elements of geometry and trigonometry: with an easy and concise system of ...

Surveying - 1829 - 115 pages
...Supplement of the Arch FA. Fig. 10. 28. The Circumference of every Circle is supposed to be divided into 300 equal parts, called Degrees ; each Degree into 60 equal parts, called Minutes ; and these into Thirds, &,c. 29. The measure of an Angle is the Arch of a Circle contained between two Lines...
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Elements of geometry: Being chiefly a selection from Playfair's geometry

Francis Nichols - Mathematics - 1829 - 186 pages
...Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees, and each degree into 60 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...
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Elements of surveying: with the necessary tables

Charles Davies - Surveying - 1830 - 306 pages
...For the purposes of trigonometrical calculations, the circumference of the circle is supposed to be divided into 360 equal parts, called degrees ; each...and each minute into 60 equal parts, called seconds. 26. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices...
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Elements of geometry and trigonometry: with notes

Adrien Marie Legendre - Mathematics - 1830 - 316 pages
...of trigonometrical calculations, the circumference of the circle is conceived to be divided into 36O equal parts, called degrees ; each degree into 60...each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two right angles, contains 1 80 degrees ; the quarter of the circumference,...
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First Lessons in Plane Geometry: Together with an Application of Them to the ...

Francis Joseph Grund - Geometry, Plane - 1830 - 255 pages
...arcs of circles, described with any radius between their legs. The circumference is for this purpose divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend...
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A new and easy introduction to the mathematics: containing. A system of ...

Arithmetic - 1831 - 396 pages
...used by Astronomers, Navigators, &c. Note 2. 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 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - Physics - 1831 - 295 pages
...Constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj called degrees; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - Physics - 1832 - 295 pages
...another constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds, The division of the zodiac into signs, is of very ancient date, each sign having...
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Easy Lessons in Geography and History: Designed for the Use of the Younger ...

Joseph Allen - Geography - 1832 - 116 pages
...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 of the earth ? How many miles...
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