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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.
Gradations in Euclid : books i. and ii., with an explanatory preface [&c ... - Page 184
edited by - 1870

## 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 - 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. XVII. A diameter of a circle is a ftraight...

## Elements of Geometry: Containing the Principal Propositions in the First Six ...

Euclid - Euclid's Elements - 1789 - 272 pages
...than a right angle. 12. A : \ 12. A figure is that which is inclofed by one or more boundaries. 13. A circle is a plane figure, contained by one line, called the- circumference, which is every where equally diftant from a point within the figure, called the centre. 14. Rectilineal...

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

John Playfair - Euclid's Elements - 1795 - 400 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...

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

John Playfair - Euclid's Elements - 1806 - 311 pages
...is inclosed by one or more boundaries. XL A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight...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...