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" 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. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 58. The Measure... "
A Course of Mathematics: For the Use of Academies as Well as Private Tuition ... - Page 378
by Charles Hutton - 1831
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An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1829 - 256 pages
...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 which form that angle, the angular point being the centre. Note. The angle is estimated by the number of degrees contained in the arc; whence a right angle is...
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The Art of Miniature Painting on Ivory

Arthur Parsey - Miniature painting - 1831 - 242 pages
...measure of a right-lined angle is the arc of any circle contained between the two lines which form the angle, the angular point being the centre, and it is estimated by the number of degrees in that arc. (Plate 3, fig. 19.) A right-lined figure is inscribed in a circle when all the angular...
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The Mechanic's Calculator, Or Workman's Memorial Book ...

William Grier - Mechanical engineering - 1832 - 366 pages
...on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of any circle contained between the two...estimated by the number of degrees contained in that arc. 59. Lines, or chords, are said to be Equidistant from the centre of a circle, when perpendiculars drawn...
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The Mechanic's Companion: Or, the Elements and Practice of Carpentry ...

Peter Nicholson - Bricklaying - 1832 - 424 pages
...an angle or its vertex, to the opposite side, called the base. The measure of any right lined angle, is an arc of any circle contained between the two lines which form the angle, the angular point being the centre. A solid is said to be cut by a plane, when it is divided...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1836 - 384 pages
...on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of any circle contained between the two...estimated by the number of degrees contained in that arc. 59. Lines, or chords, are said to be Equidistant from the centre of a circle, when perpendiculars drawn...
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Civil Architecture: Or, A Complete Theoretical and Practical System of Building

Edward Shaw - Architecture - 1836 - 438 pages
...ab, and bc, will be the two sides containing that angle. 53. The measure of any right lined angle, is an arc of any circle contained between the two lines which form the angle, the angular point being in the centre, as K. Thus if the arc b с d be double of the arc...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1842 - 320 pages
...on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees.^ 58. The measure of an angle, is an arc of any circle contained between the two...estimated by the number of degrees contained in that arc. 59. Lines, or chords, are said to be Equidistant from the centre of a circle, when perpendiculars drawn...
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The Mechanic's Companion, Or, The Elements and Practice of Carpentry ...

Peter Nicholson - Geometry - 1845 - 430 pages
...an angle or its vertex, to the opposite side, called the base. The measure of any right lined angle, is an arc of any circle contained between the two lines which form the angle, the angular point being the centre. A solid is said to be cut by a plane, when it is divided...
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An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1848 - 320 pages
...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 which form that angle, the angular point being the centre. Nate. The angle is estimated by the number of degrees contained in the arc ; whence a right angle is...
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Principles of Architecture: Comprising Fundamental Rules of the Art, with ...

Peter Nicholson, Joseph Gwilt - Architectural drawing Technique - 1848 - 750 pages
...and ab and be will be the two sides containing that angle. 53. The measure of any right-lined angle, is an arc of any circle contained between the two lines which form the angle, the angular point being in the centre, as in к. Thus, if the arc ¿a/be double of the arc...
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