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" A circle (Fig. 38) is a figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within, called the center. "
Elements of Geometry and Trigonometry: With Applications in Mensuration - Page 11
by Charles Davies - 1855 - 324 pages
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A London Encyclopaedia, Or Universal Dictionary of Science, Art ..., Volume 10

Thomas Curtis - Aeronautics - 1829 - 814 pages
...called the radii of the circle. The circumference itself is also often called a circle. Fig. 20. 31. The DIAMETER of a circle is a straight line passing through the centre, and terminated both ways by the circumference. 32. An ARC of a circle is any part of its circumference....
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A treatise on practical geometry, mensuration, conic sections, gauging, and ...

Ireland commissioners of nat. educ - 1834 - 370 pages
...of each figure be equal, it is called a regular polygon ; but if unequal, an irregular polygon. 34. The Diameter of a circle is a straight line passing through the centre, and terminated by the circumference ; thus AB is the diameter of the circle. The diameter divides the circle...
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The Engineer's and Mechanic's Encyclopędia: Comprehending ..., Volume 1

Luke Hebert - Industrial arts - 1835 - 816 pages
...straight line drawn from the vertex of a figure to the middle of the base. The axis of a circle or sphere is a straight line passing through the centre, and terminating at the circumference on the opposite sides. The axis of a cone is the line from the vertex to the centre of...
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The Engineer's and Mechanic's Encyclopędia, Volume 1

Luke Hebert - Industrial arts - 1836 - 814 pages
...straight line drawn from the vertex of a figure to the middle of the base. The axis of a circle or sphere is a straight line passing through the centre, and terminating at the circumference on the opposite sides. The axis of a cone is the line from the vertex to the centre of...
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A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - Measurement - 1837 - 284 pages
...of each figure be equal, it is called a regular polygon ; but if unequal, an irregular polygon. 34. The Diameter of a circle is a straight line passing through the centre, and terminated both ways by the circumference ; thus AB is the diameter of the circle. The diameter divides...
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First Lessons in Geometry: With Practical Applications in Mensuration, and ...

Charles Davies - Geometrical drawing - 1840 - 264 pages
...of which are equally distant from a certain point within, called the centre. Thus, if all the points of the curve AEB are equally distant from the centre C, this curve will be the circumference of a circle. 7. The circumference of a circle is used for the measurement of angles. For this purpose it...
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A Practical System of Mensuration of Superficies and Solids ...

J. M. Scribner - Measurement - 1844 - 130 pages
...is equally distant from a certain point within, called the centre ; J1EBD (fig. 1) is a circle. 2. A Diameter of a circle is a straight line, passing through the centre and terminating at the circumference ; as AB (fig. 1.) 3. A Radius or Semi-Diameter is a straight line, extending from the...
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Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for ...

Charles Davies - Geometrical drawing - 1846 - 254 pages
...of which are equally distant from a certain point within, called the centre. Thus, if all the points of the curve AEB are equally distant from the centre C, this curve will be the circumference of a circle. 25. For what is the circumference of a circle used ? The circumference of a circle is used...
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The Rational Arithmetic: In which the Science is Fully Developed, the Art ...

James S. Russell - Arithmetic - 1847 - 340 pages
...equally distant from the centre. 32. The circumference of a circle is the curved line enclosing it. 33. A diameter of a circle is a straight line passing through the centre and terminated by the- circumference. 34. A radius is a straight line extending from the centre o the circumference...
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Elementary Geometry: With Applications in Mensuration

Charles Davies - Geometry - 1850 - 238 pages
...of which are equally distant from a certain point within called the centre. Thus, if all the points of the curve AEB are equally distant from the centre C, this curve will be the circumference of a circle. 25. Any portion of the circumference, as AED, is called an arc. 26. The diameter of a circle...
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