| William Whewell - 1847
...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
...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
...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... | |
| Euclides, Thomas Tate - 1849 - 108 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 - 564 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...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
...&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 - 1850 - 320 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.... | |
| Euclides - 1852
...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
...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
...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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