| William Whewell - 1847 - 756 sider
...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 sider
...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,..."And this point is called the centre of the circle."** (A pair of dividers or compasses will be useful in explaining this definition.} 2. "A diameter of a... | |
| Euclides - 1848 - 52 sider
...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 sider
...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 - 1850 - 586 sider
...&c., for describing circles, measuring distances, and taking the thickness of solids Circle, a plain **figure contained by one line, which is called the...and this point is called the centre of the circle** Circular saw. Circular saws, revolving upon an axis, have the advantage that they act continually in... | |
| John Weale - 1850 - 588 sider
...&c., for describing circles, measuring distances, and taking the thickness of solids Circle, a plain **figure contained by one line, which is called the...and this point is called the centre of the circle** The circumference of a circle is known to be about 3-14159 times its diameter, or, in other words,... | |
| George Roberts Perkins - 1850 - 332 sider
...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 - 914 sider
...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 - 914 sider
...following definitions, of a circle and parallel straight lines, point out two errors. (1.) A circle i» **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 - 148 sider
...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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