 | Robert Simson - Trigonometry - 1762 - 488 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure...to one another. XVI. And this point is called the center of the circle. XVII. A diameter of a circle is a ftraight line drawn thro* the center, afldsce... | |
 | Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are equal to one another. XII. And this point is called the centre of the circle. XIII. A diameter of a circle is a ftraight... | |
 | Robert Simson - Trigonometry - 1804 - 530 pages
...plain figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are equal to one another. - X/K .\ XVI. And this point is called the center of the circle. ^ XVII. A diameter of a circle is... | |
 | John Playfair - Mathematics - 1806 - 320 pages
...which is less than a right angle. X. A figure is that which is inclosed by one or more boundaries. XL A circle is a plane figure contained by one line,...figure to the circumference are equal to one another. XII. And this point is called the centre of the circle. XHL A diameter of a circle is a straight line... | |
 | Edward Edwards - Perspective - 1806 - 414 pages
...plain figure contained by one line, which is called the circumference, and is fuch, that all ftraight lines drawn from a certain point within the figure to the circumference, are equal to one another. The point from which fuch lines are drawn, is called the center of the circle. A 'diameter of a circle,... | |
 | Robertson Buchanan - Gearing - 1808 - 216 pages
...which meeting do not lie in one line. 2. A triangle is a figure contained by three straight lines. 3. 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. 4. The radius of a circle, is a right line drawn... | |
 | Charles Butler - Mathematics - 1814 - 528 pages
...figures as are contained by more than one line, as the triangle, square, polygon, &c. are excluded; "and is such that all straight lines drawn from a certain point within the figure" (called in the next following definition " the centre") to the circumference, are equal to one another... | |
 | Daniel Cresswell - Geometry - 1816 - 352 pages
...OF A SPHERE AND A PLANE. DEFINITIONS. ART. 1. A- Sphere is a solid 'figure contained by one surface, and is such that all straight lines, drawn from a certain point within the figure to the surface, are equal to one another : (2.) And this point is called the Center of the Sphere. (3.) A... | |
 | John Playfair - Circle-squaring - 1819 - 350 pages
...space contained in a figure, i.mj reference, to the nature of the line or lines which bound it. XI. A circle is a plane figure contained by one line,...figure to the circumference, are equal to one another. XII. And this point is called the centre of the circle. XIII. A diameter of a circle is a straight... | |
 | Euclid - 1822 - 222 pages
...a plane figure bounded by one line,, which is called the circumference, and is such that all right lines drawn from a certain point within 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 right line-... | |
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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. 
