 | 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... | |
 | Euclides - 1848 - 52 pages
...less than a right 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,...figure to the circumference, are equal to one another. XVI. And this point is called ttas centre of the circle. XVII. A diameter of a circle is a straight... | |
 | Euclid, Thomas Tate - 1849 - 120 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. A VI. And this point is called the centre of the circle. XVII. A diameter of a circle is a straight... | |
 | John Weale - Architecture - 1850 - 600 pages
...&c., for describing circles, measuring distances, and taking the thickness of solids Circle, a plain 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 The circumference of a circle is known to be about... | |
 | John Weale - 1850 - 590 pages
...&c., for describing circles, measuring distances, and taking the thickness of solids Circle, a plain 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 Circular saw. Circular saws, revolving upon an axis,... | |
 | George Roberts Perkins - Geometry - 1850 - 332 pages
...five, and so on for polygons of a greater number of sides. 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.... | |
 | 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 line drawn from... | |
 | Euclides - 1852 - 152 pages
...contained by one line, which is called the circumference, and is such that all straight lines B 3 BOOK I. drawn from a certain point within the figure to the circumference, are equal to one another. XVI. And this point is called the centre of the circle. [In the above figures A is the centre of the... | |
 | Popular educator - 1852 - 842 pages
...a ame line, called the cireumference or periphery, which is such that all straight linen drawn trom a certain point within the figure to the circumference are equal to each other. This point is called the centre of the circle, and each of the straight lines is called... | |
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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. 
