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" A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another. "
Elements of Geometry: With, Practical Applications - Page 17
by George Roberts Perkins - 1850 - 320 pages
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Orr's Circle of the Sciences: Organic nature, vols. 1-3 (1854-1856)

William Somerville Orr - Science - 1854 - 534 pages
...circle is a plane figure enclosed by one line, which is called the circumference of the circle : it is such, that all straight lines, drawn from a certain point within the figure to the circumference, are equal to one another. This point is called the centre of the circle....
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 262 pages
...applicable to solid figures, as well as to plane figures. XV. A circle is a plane figure contained [or, bounded] by one line, which is called the circumference,...straight lines drawn from a certain point within the figure to the circumference, are equal to one another. The circumference of a circle is its boundary....
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Mensuration of lines, areas, surfaces, and volumes

Robert Rawson - 1856 - 200 pages
...figure is that which is inclosed by one or more boundaries. XV. A circle is a plane figure contained by one line, which is called the circumference, and...straight lines drawn from a certain point within the figure to the circumference, are equal to one another. XVL And this point is called the centre of the...
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The Popular Educator, Volume 1

1856 - 422 pages
...is a plane figure contained or bounded by a curve line, called the circumference or periphery, which is such that all straight lines drawn from a certain point within the figure to the circumference are equal to each other. This point is called the centre of the circle,...
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Appletons' Cyclopędia of Drawing: Designed as a Text-book for the Mechanic ...

William Ezra Worthen - Architectural drawing - 1857 - 650 pages
...are examples, annexed to which are their respective designations. A circle is a plane figure contamed by one line, which is called the circumference, and...straight lines, drawn from a certain point within the figure to the circumference, are equal to one another. And this point is called the centre of the circle....
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APPLETONS' CYCLOPAEDIA OF DRAWING

W.E. WORTHEN - 1857 - 600 pages
...designations. A circle is a plane figure contained by one line, which is called the tircwnference, and is such that all straight lines, drawn from a certain point within the figure to the circumference, are equal to one another. And this point is called the centre of the circle....
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Rudimentary Dictionary of Terms Used in Architecture: Civil, Architecture ...

John Weale - Architecture - 1859 - 622 pages
...circles, measuring distances, and taking the thickness of solids. Circle, a plain figure contained by one line, which is called the circumference, and...straight lines drawn from a certain point within the figure to the circumference are equal to one anCHU CIRCULAR. С Г- А other, and this point is called...
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Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858 - 248 pages
...equals the square of half the line. Def. 15 and 16. A circle is a plane figure contained by one line called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference are equal to one another. And this point is called the centre of the circle....
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - Geometry, Plane - 1860 - 380 pages
...figure is that which is enclosed by one or more boundaries. XV. A circle is a plane figure contained by one line, which is called the circumference, and...straight lines drawn from a certain point within the figure to the circumference, are equal to one another. XVI. And this point is called the center of...
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The Intuitions of the Mind Inductively Investigated

James McCosh - History - 1860 - 512 pages
...to any length in a straight line;" "There may be such a figure as a circle, that is, a plane figure such that all straight lines drawn from a certain point within the figure are equal to one another;" and that "A circle may be described from any centre at any distance...
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