 | Euclid, James Thomson - Geometry - 1845 - 380 pages
...rhomboid is a parallelogram trhich has not its adjacent sides equal, nor its angles right angles. 30. A circle is a plane figure contained by one line,...which is called the circumference* and is such that R all straight lines drawn from a certain point within the figure to the circumference are equal to... | |
 | Euclides - 1846 - 292 pages
...the extremity of any thing. xiv. A figure is that which is inclosed 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. xvn. A diameter of a circle is a straight... | |
 | Great Britain. Admiralty - Geometry - 1846 - 130 pages
...any thing. XIV. A figure is that which is enclosed by one or more boundaries. XV. Acircle is aplane figure contained by one line, which is called 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 straight... | |
 | Great Britain. Admiralty - Geometry - 1846 - 130 pages
...thing. XIV. A figure is that which is enclosed by one or more boundaries. XV. Acircleis aplanefigure contained by one line, which is called the circumference,...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... | |
 | W. M. Buchanan - Science - 1846 - 768 pages
...magical operations. CIB'CLB, Lat. circulus, from circus. A geometrical figure contained under one line called the circumference ; and is such, that all straight...lines drawn from a certain point within the figure called the centre, to the circumference, arc equal to one another. Thus, In the figure, AB = AC = AD.... | |
 | Euclides - 1846 - 272 pages
...called acute. 14. A plane figure is a plane superficies, bounded on every side by one or more lines. 15. A circle is a plane figure, contained by one line, which is called the circumference ; to which from a certain point within the figure, all right lines drawn are equal. 16. That point... | |
 | Euclides - 1847 - 128 pages
...enclosed by one or more boundaries. The quantity of space contained in any figure is called its area. 15. A circle is a plane figure contained by one line,...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... | |
 | George Roberts Perkins - Geometry - 1847 - 326 pages
...expression, in ( n — 3). [See Elements of Algebra, Art. 178.] XXIII. A circle is a plane figure bounded by one line, which is called the circumference ; and...straight lines drawn from a certain point within the circle to the circumference, are equal to one another. This point is called the centre of the circle.... | |
 | William Whewell - Science - 1847 - 756 pages
...circle, — " that it is a figure contained by one line, which is called the circumference, and which is such, that all straight lines drawn from a certain point within the circumference are equal to one another," — we were to substitute an axiom and a definition, as follows... | |
 | Charles Richson - 1848 - 98 pages
...DEFINITIONS, which may be illustrated by the diagrams; and upon which suitable questions may be asked. 1. "A circle is a plane figure, contained by one line,...figure to the circumference are equal to one another/' "And this point is called the centre of the circle." (A pair of dividers or compasses will be useful... | |
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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. 
