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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. "
Elements of Plane Trigonometry: And Their Application to the Measurement of ... - Página 14
por William Frothingham Bradbury - 1864
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The American House Carpenter: A Treatise on the Art of Building : Comprising ...

Robert Griffith Hatfield - 1895 - 685 páginas
...499, obtuse angle)— then each of the two angles is called a right angle. 327. — Definition. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; hence a semicircle contains 180 degrees, a quadrant 90, etc. CBD FIG. 250. 328. — Definition. —...
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A Complete Arithmetic: With Oral and Written Exercises

George Washington Hull - 1895 - 352 páginas
...quadrant. An Arc is any part of a circumference. For convenience of measuring the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds. TABLE. 60 seconds (") = 1 minute, '. 60 minutes...
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The Normal Standard Arithmetic: By Analysis and Induction, Designed for ...

Edward Brooks - 1895 - 415 páginas
...the circumference is called a quadrant. 241. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 242. Any angle having its vertex at the centre is...
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The Normal Rudiments of Arithmetic: Oral and Written, Designed for Primary ...

Edward Brooks - 1895 - 239 páginas
...from a point within called the centre. 3. For the purpose of measuring angles the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 4. Any angle at the centre, as BCD, is measured by...
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Plane Geometry

George D. Pettee - 1896 - 253 páginas
....-.theirlimits=J 175. Sen. Both the circumference of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each...60 equal parts called minutes, and each minute into CO equal parts called seconds. Since central angles vary as their intercepted arcs, any central angle...
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First Principles of Mechanical and Engineering Drawing

H. Holt-Butterfill - 1897 - 211 páginas
...is a quadrant, and one half of it a semi-circle. For the measurement of angles, arcs, chords, etc., the circumference of every circle is supposed to be divided into 360 equal parts called degrees, which are indicated when speaking of them by attaching a small circle to the right of the number stated...
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The Elements of Mechanical Engineering, Volumen1

1897
...the unknown parts from the given parts is called the solution of the triangle. 741. In Trigonometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; every degree is subdivided into GO equal parts, called minutes, and every minute is again divided...
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Self Culture

1897
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of...
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Modern Culture

Edward Cornelius Toune, Graeme Mercer Adam - 1897
...are, in fact, measured in this way, that is, on the circumference of a circle. A circle is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. Thus, when you have swung this strip of paper one-twelfth of...
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Graded Lessons in Arithmetic: Book VII

Wilbur Fisk Nichols - 1898
...each flower-bed ? For all the flower-beds? For the lawn? MEASUREMENT OF ANGLES. 1. For convenience, every circle is supposed to be divided into 360 equal parts called degrees. 2. Вy means of an instrument called a protractor any angle can be measured. 3. From cardboard cut...
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