 | Isaac Sharpless - Geometry - 1879 - 282 pages
...quadrilateral is a straight line joining its opposite angles. Circ1e. 30. A circle is a plane figure, enclosed by one line, which is called the circumference, and is such that all lines drawn from a certain point within the figure to the circumference are equal to one another. 31.... | |
 | Euclides, James Hamblin Smith - 1879 - 376 pages
...is one which is less than a right angle. ^ XIII. A CIRCLE is a plane figure contained by one lino, which is called the CIRCUMFERENCE, and is such, that all straight lines drawn to the circumference from a certain point (called the CENTRE) within the figure are equal to one another.... | |
 | Isaac Todhunter - Euclid's Elements - 1880 - 426 pages
...is the extremity of any thing. 14. A figure is that which is enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line,...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 straight line... | |
 | T S. Taylor - 1880 - 152 pages
...as above, and using the letters affixed to these lines instead of A, J3, C, D. ff Definitions. — A circle is a plane figure contained by one line,...within the figure to the circumference are equal. And that point is called the centre of the circle. General Enunciation. From the greater of two given... | |
 | Thomas Liddell Ainsley - 1880 - 866 pages
...those which are called curvilinear, being bounded not by straight lines but by curved lines. Def.—A circle is a plane figure contained by one line, which...is called the circumference, and is such that all strait lines drawn from its centre to the circumference are equal to one another. The straight line... | |
 | James Thomson - 1880 - 408 pages
...angles which are not adjacent to one another. XVII. A CIRCLE is a figure contained, on a flat surface, by one line which is called the CIRCUMFERENCE ; and is such that all straight lines drawn to the circumference from a certain point within the figure, called the CENTRE, are equal to each other.... | |
 | Euclides, Frederick Burn Harvey - Geometry - 1880 - 178 pages
...which is contained by one or more boundaries. 15. A CIRCLE is a plane figure contained by one line called the CIRCUMFERENCE, and is such that all straight lines drawn from a certain point within it, called the CENTRE, to the circumference are equal to each other. Each of such equal straight lines... | |
 | Sir Norman Lockyer - Electronic journals - 1880 - 668 pages
...VII. — A plane figure is a portion of a plane surface inclosed by a line or lines. "Def. VIII. — \circle is a plane figure contained by one line, which is called the circumference, &c. "Def. XXII. — A plane rectilineal figure is a portion of a plane surface inclosed by straight... | |
 | Euclides - Euclid's Elements - 1881 - 236 pages
...figurca, u well u to plane figures XV. A circle is a plane figure contained [or, bounded] by •>ae line, which is called the circumference, and is such...figure to the circumference, are equal to one another. The circumference of a circle ie its boundary. The space contained within the boundary, \s called the... | |
 | Education - 1882 - 676 pages
...them lies wholly in that superficies. An obtuse angle is that which is greater than a right angle. A circle is a plane figure contained by one line which...circumference, and is such that all straight lines drawn from я certain point (called the centre) within the figure to the circumference are equal to one another.... | |
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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 : 16. 
