 | Euclid, James Thomson - Geometry - 1845 - 380 pages
...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
...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, which is called the...And this point is called the centre of the circle. xvn. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by... | |
 | Euclid, John Playfair - Euclid's Elements - 1846 - 332 pages
...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, which is called the...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... | |
 | W. PEASE - 1846 - 86 pages
...geometrically, that only is a figure, which has either superficial or solid content. 28*. A Circle is a plane figure contained by one line, which is called the...figure to the circumference, are equal to one another. 29*. And this point is called the Centre of the circle. A circle is the superficies or space enclosed... | |
 | 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 - 1847 - 128 pages
...boundaries. The quantity of space contained in any figure is called its area. 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... | |
 | 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... | |
 | Euclid - 1848 - 52 pages
...angle. XIII. 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 is called the...equal to one another. XVI. And this point is called ttas centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre,... | |
 | Charles Richson - 1848 - 98 pages
...illustrated by the diagrams; and upon which suitable questions may be asked. 1. "A circle is a plane figure, contained by one line, which is called the...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 : XVI. 
