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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 ... - Page 19
by Euclid, John Playfair - 1819 - 333 pages

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

John Playfair - Geometry - 1837 - 332 pages
...contained in a figure, without any reference to the nature of the line or lines which bound it. 11. A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn from a certaia point within the figure to the circumference, are equal to one another. 12. And this point...

## The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid - Geometry - 1837 - 410 pages
...rliomboid is a parallelogram which has not its adjacent sides equal, nor its angles right angles. 30. A circle is a plane figure contained by one line,...called the circumference, and is such that all straight Q y lines drawn from a certain point within the figure to K/^>~^0 the circumference are equal to one...

## Treatise on Arithmetic, in Theory and Practice: With an Appendix, Containing ...

James Thomson (LL.D.) - Arithmetic - 1837 - 294 pages
...line passing through two of its remote angles. XVII. A CIRCLE is a figure contained on a flat surface, by one line which is called the CIRCUMFERENCE; and is such that all straight lines drawn to the circumference from a certain point within the figure, called the CENTRE, are equal to each other....

## Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838 - 264 pages
...is less than a right angle. XI. A figure is that which is enclosed by one or more boundaries. XII. A circle is a plane figure contained by one line,...drawn from a certain point within the figure to the circum ference, are equal to one another. XIII. And this point is called the centre of the circle,....

## The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841 - 378 pages
...the extremity of anything." XIV. A figure is that which is enclosed by one or more boundaries. 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. XVII. A diameter of a circle is a straight...

## Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842 - 320 pages
...is less than a right angle. XIV. A figure is that which is inclosed by one or more boundaries. XV. A circle is a plane figure contained by one line which...figure to the circumference are equal to one another. XVL This point is called the centre of the circle. XVII, A diameter of a circle is a straight line...

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

John Playfair - Euclid's Elements - 1842 - 332 pages
...contained in a figure, without any reference to the nature of the line or lines which bound it.m 1 1 . A circle is a plane figure contained by one line,...figure to the circumference, are equal to one another . 12. And this point is called the centre of the circle. 13. A diameter of a circle is a straight line...

## Lessons on the globes

T H. Howe - 1842 - 462 pages
...taken and joined by a straight line, the straight line will lie altogether in that surface or plane. FA Circle is a plane figure, contained by one line which...figure to the circumference, are equal to one another. c That point within the circle which is thus equally distant from the circumference, is called the...