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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.
First principles of Euclid: an introduction to the study of the first book ... - Page 18
by T S. Taylor - 1880

## The Elements of Euclid [book 1] for beginners, by J. Lowres

Euclides - 1852 - 48 pages
...a plane figure bounded by one line called the circumference, and is of such a kind, that all right lines drawn from a certain point within the figure to the circumference are equal to one another ; as, the circle DBF. 17. This point is called the centre of the circle, and the right...

## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853 - 146 pages
...the extremity of any thing." xrv. A figure is that which is inclosed by one or more boundaries. xv. A circle is a plane figure contained by one line,...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...

## The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...is the extremity of anything. 14. A figure is that which is enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line,...point within the 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...

## The first six books of the Elements of Euclid, with numerous exercises

Euclides - Geometry - 1853 - 176 pages
...any thing. XIV. A figure is that which is enclosed by one or more boundaries. XV. A circle is a plain figure contained by one line, which is called the...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...

## The Elements of Euclid, books i-vi; xi. 1-21; xii. 1,2; ed. by H.J. Hose, Book 1

Euclides - Geometry - 1853 - 334 pages
...plane figure is to be understood. XV. A circle is defined to be a plane figure, contained by one line, such that all straight lines drawn from a certain point within the figure, to meet this one line, are equal to one another. XVI. This one line is called the circumference of the...

## Orr's Circle of the Sciences: Organic nature, vols. 1-3 (1854-1856)

William Somerville Orr - Science - 1854 - 534 pages
...circle is a plane figure enclosed by one line, which is called the circumference of the circle : it is such, that all straight lines, drawn from a certain...within the figure to the circumference, are equal to one another. This point is called the centre of the circle. And any line drawn from the centre to...

## The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 270 pages
...solid figures, as well as to plane figures. XV. A circle is a plane figure contained [or, bounded] by one line, which is called the circumference, and...within the figure to the circumference, are equal to one another. The circumference of a circle is its boundary. The space contained within the boundary,...

## Mensuration of Lines, Areas, Surfaces, and Volumes ...

Robert Rawson - 1856 - 178 pages
...the extremity of any thing." xrv. A figure is that which is inclosed by one or more boundaries. XV. A circle is a plane figure contained by one line,...within the figure to the circumference, are equal to one another. XVL And this point is called the centre of the circle. XVH. A diameter of a circle...