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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 Two ... - Page 3
by John Playfair - 1795 - 400 pages

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

Robert Simson - Trigonometry - 1762 - 466 pages
...extremity of any thing." XIV. A figure is that which is inclofed by one or more boundaries. XV. Book I. A circle is a plane figure contained by one line,...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
...extremity of any thing." XIV. A figure is that which is inclofed by one or more boundaries. XV. XV. . A circle is a plane figure contained by one line,...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
...any thing." At. V« A figure is that which is inclbfed by one or more boundaries XV. Book I. A cirele is a plane figure contained by one line, which is...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...

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

Robert Simson - Trigonometry - 1781 - 466 pages
...inclofed by one or more boundaries^ XV- Book I. A circle is a plane figure contained by-one line, which 5\$ the circumference, and is fuch that all ftraight lines...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 First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 351 pages
...XIII. Omitted. XIV. A figure is that which is inclofed by one or more boundaries. XV. XV. BOOK. I. A circle is a plane figure contained by one line,...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...

## A Treatise on Land-surveying, in Six Parts ...

Thomas Dix - Surveying - 1799 - 193 pages
...every where equally diftant from the point С within the circle, called the centre thereof. в 10. A Diameter of a Circle is a ftraight line drawn through the centre, and terminated both ways by the circumference. il. A Radius of a Circle is a ftraight line...

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

Robert Simson - Trigonometry - 1804
...thing." XIV. A figure is that which is inclofed by one or more boundaries XV. Book A circle is a plain figure contained by one line, which is called 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...

## A Practical Treatise of Perspective, on the Principles of Dr. Brook Taylor

Edward Edwards - Perspective - 1806 - 313 pages
...properties of right lines and angles, it will be neceflary to fpeak of the circle. A CIRCLE is a plain figure contained by one line, which is called the...figure to the circumference, are equal to one another. The point from which fuch lines are drawn, is called the center of the circle. A 'diameter of a circle,...