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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: Containing the First Six Books of Euclid with a ... - Pagina 7
door John Playfair - 1856 - 318 pagina’s
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## An English primer; compiled under the superintendence of E.C. Lowe

Edward Clarke Lowe - 1866
...which is enclosed by one or more boundaries. 15. A circle is a plane figure contained (or bounded) by one line, which is called the circumference, and...figure to the circumference are equal to one another. 1C. And this point is called the centre of the circle. 17. A diameter of a circle is a straight line...
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## The advanced lesson book, by E.T. Stevens and C. Hole

Edward Thomas Stevens - 1866
...product is the area. DD THE CIRCLE. Definition : — A circle J8 a plane figure bounded by one line called the circumference, and is such that all straight lines drawn from, a certain point within the circle to the circumference are equal to one another. This point is called the centre of the circle....
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## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - 1867 - 400 pagina’s
...is the extremity of any thing. 14. A figure is that which is enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line,...figure to the circumference are equal to one another : 16. And this point is called the centre of the circle. 17. A diameter of a circle is a straight line...
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## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1868 - 410 pagina’s
...which is less than a right angle. XTTI. A term or boundary is the extremity of any thing. xrv. XV. A circle is a plane figure contained by one line,...all straight lines drawn from a certain point within tie figure to the circumference, are equal to one another. XVI. And this point is called the center...
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## Elementary mensuration

Septimus Tebay - 1868 - 115 pagina’s
...10. An acute angle is less than a right angle. 11. 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 it to the circumference are equal to one another. 12. And this point is called the centre of the circle...
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## Mensuration for Beginners: With Numerous Examples

Isaac Todhunter - 1869 - 296 pagina’s
...polygon which are not adjacent is also called a 15. A circle is a plane figure bounded by one lino which is called the circumference, and is such that...figure to the circumference are equal to one another: this point is called the centre of the circle. A radius of a circle is a straight line drawn from the...
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## Elements of geometry, containing books i. to vi.and portions of books xi ...

Euclides, James Hamblin Smith - 1872 - 349 pagina’s
...less than a right angle. XII. A FIGURE is that which is enclosed by one or •'ore boundaries. XIII. A CIRCLE is a plane figure contained by one line,...CIRCUMFERENCE, and is such, that all straight lines drawn to the circumference from a certain point (called the CENTRE) within the figure are equal to one another....
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## The Popular Educator, Volume 1

Educator - 1872
...contained or bounded by a canal line, called the circumference or periphery, which is snch that aU straight lines drawn from a certain point within the figure to the circumference are equal to each other. This point Kg. 6. Fig. 7. is called the centre of the circle, and each of tho straight...
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## Euclid's Elements of Geometry

Euclid - 1872 - 261 pagina’s
...called acute. 14. A plane figure is a plane superficies, hounded on every side by one or more lines. 15. A circle is a plane figure, contained by one line, which is called the circumference; to which from a certain point within the figure, all right lines drawn are equal. 16. That point is...
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## The first and second books of Euclid explained to beginners, by C.P. Mason

Euclid, Charles Peter Mason - 1872
...XII. An acute angle is an angle which is less than a right angle. Def. XV. A circle is a plane bounded figure, contained by one line, which is called the circumference, and is such, that every point in it is at the same distance from a certain point within, which is called the centre....
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