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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 10
by George Roberts Perkins - 1847 - 308 pages
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The Elements of Euclid: With Dissertations Intended to Assist and Encourage ...

Euclid, James Williamson - Euclid's Elements - 1781 - 324 pages
...extremity of any thing is called A TERM. 14. Thefpace bounded by one or more terms is called a FIGURE. 15. A CIRCLE is a plane figure bounded by one line, which is called a CIRCUMFERENCE : upon which all the ftraight lines falling, from oNE PoINT of thofe lying within the...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1806 - 311 pages
...figure is that which is inclosed by one or more boundaries. XL 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. XII. And this point is called the centre of the...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 518 pages
...boundaries. XV. Book I. A circle is a plane figure contained by one line, which is called l •»•j< 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:. XVI. And this point is called the centre of...
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An Essay on the Teeth of Wheels: Comprehending Principles, and Their ...

Robertson Buchanan - Gearing - 1808 - 216 pages
...2. A triangle is a figure contained by three straight lines. 3. 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, and this point is called the centre of the circle....
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Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 5

John Mason Good - 1813 - 722 pages
...inclosed by one qr more boundaries. 15. A circle is a plane figure contained by one line., which is railed the circumference, and is such that all straight lines drawn from a certiiu point within the figure to the circumference, агч equal to one another. 16. And this point...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814 - 558 pages
...is inclosed by one or more boundaries. XV. A circle is a plane figure contained by one line, winch 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. XVI. And this point is called the centre of...
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An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - Mathematics - 1814 - 528 pages
...figures as are contained by more than one line, as the triangle, square, polygon, &c. are excluded; "and is such that all straight lines drawn from a certain point within the figure" (called in the next following definition " the centre") to the circumference, are equal to...
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A Treatise on Spherics: Comprising the Elements of Spherical Geometry, and ...

Daniel Cresswell - Geometry - 1816 - 294 pages
...OF A SPHERE AND A PLANE. DEFINITIONS. ART. 1. A- Sphere is a solid 'figure contained by one surface, and is such that all straight lines, drawn from a certain point within the figure to the surface, are equal to one another : (2.) And this point is called the Center of the Sphere....
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 pages
...reference to the nature of the line or lines which bound it. XI. 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. And this point is called the centre of the circle....
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - Geometry - 1821 - 514 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: XVI. And this point is called the centre of...
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