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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 : XVI.
The Elements of Geometry, Symbolically Arranged - Page 5
by Great Britain. Admiralty - 1846

## Euclid for beginners, books i. and ii., with simple exercises by F.B. Harvey

Euclides, Frederick Burn Harvey - Geometry - 1880 - 178 pages
...which is contained by one or more boundaries. 15. A CIRCLE is a plane figure contained by one line called the CIRCUMFERENCE, and is such that all straight lines drawn from a certain point within it, called the CENTRE, to the circumference are equal to each other. Each of such equal straight lines...

## A treatise on arithmetic. [With] Key, Volume 1

James Thomson - 1880 - 408 pages
...angles which are not adjacent to one another. 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....

## The engineers' manual of the Local marine examinations

Thomas Liddell Ainsley - 1880 - 866 pages
...called curvilinear, being bounded not by straight lines but by curved lines. Def.—A circle is a plane figure contained by one line, which is called the circumference, and is such that all strait lines drawn from its centre to the circumference are equal to one another. The straight line...

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

Euclides - Euclid's Elements - 1881 - 236 pages
...figurca, u well u to plane figures XV. A circle is a plane figure contained [or, bounded] by •>ae line, which is called the circumference, and is such...figure to the circumference, are equal to one another. The circumference of a circle ie its boundary. The space contained within the boundary, \s called the...

## The Practical Teacher, Volume 1, Issue 1

Education - 1882 - 676 pages
...that superficies. An obtuse angle is that which is greater than a right angle. A circle is a plane figure contained by one line which is called the circumference, and is such that all straight lines drawn from я certain point (called the centre) within the figure to the circumference are equal to one another....

## The Intuitions of the Mind Inductively Investigated

James McCosh - Intuition - 1882 - 472 pages
...any length in a straight line ;" " There may be such a figure as a circle, that is, a plane figure such that all straight lines drawn from a certain point •within the figure are equal to one another ;" and that " A circle may be described from any centre at any distance from...

## Class lessons on Euclid

Marianne Nops - 1882 - 278 pages
...the definition of a circle (def. 15). It is to the latter part that I wish to draw your attention, ' and is such that all straight lines drawn from a certain point (the centre) within the figure to the circumference are equal.' Here is a mode of measuring the lines...

## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 428 pages
...any thing. 14. A figure is that which is enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line, which is called 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 a straight lino...