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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.
Orr's Circle of the Sciences: The mathematical sciences - Page 45
edited by - 1854

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1762 - 466 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight 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 the circle. XVII. A diameter of a circle is a ftraight...

## The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - Trigonometry - 1775 - 520 pages
...plane figure contained by one line, which is Called the circumference, and is fuch that all ftraight 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 the circle. rXVII. A diameter of a circle is a ftraight...

## The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 550 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight 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 the circle. XVII. A diameter of a circle is a ftraight...

## Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

John Playfair - Euclid's Elements - 1795 - 444 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight 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 circle. XIII. A diameter of a circle is a ftraight...

## The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 351 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight 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 the circle. Definition A. Any ftraight line drawn from...

## The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804
...plain figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are equal to one another. - X/K .\ XVI. And this point is called the center of the circle. ^ XVII. A diameter of a circle is...

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 518 pages
...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...figure to the circumference, are equal to one another:. XVI. And this point is called the centre of the circle. XVH. A diameter of • circle is a straight...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1806 - 320 pages
...boundaries. XL 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...figure to the circumference are equal to one another. XII. And this point is called the centre of the circle. XHL A diameter of a circle is a straight line...