| 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... | |
| 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,...within the 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... | |
| 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,...point within 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... | |
| 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,...point within the 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... | |
| 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...point within 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... | |
| 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.... | |
| Her MAjesty' Inspectors of schools - 1850 - 912 pages
...iif tin: following definitions, of a circle and parallel straight lines, point out two eirurs. (1.) **A circle is a plane figure contained by one line,...is called the circumference, and is such that all** lines drawn from a certain point within the figure are equal to one anollirr. 3. Eucliil says, "If... | |
| Great Britain. Committee on Education - 1850 - 942 pages
...following definitions, of a circle and parallel straight lines, point out two errors. (1.) A circle iť **a plane figure contained by one line, which is called the circumference, and is such that all** lines drawn from a certain point within the figure are equal to one another. (2.) Parallel lines are... | |
| Euclides - 1852 - 152 pages
...figure contained by one boundary. Fig. 2. and Jig. 3. figures contained by more than one boundary.] XV. **A circle is a plane figure contained by one line,...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.... | |
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