| 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,...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. And this... | |
| 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... | |
| 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 that all straight lines drawn** from a certain point within the figure to the circumference, are equal to one another. The circumference... | |
| Education - 1882 - 676 pages
...inclination of two lines to each other in a plane, which meet together, but are not in the same direction. **A circle is a plane figure contained by one line which...circumference, and is such that all straight lines drawn** from a certain point (called the centre) within the figure to the circumference are equal to one another.... | |
| Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 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,...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. And this... | |
| Euclides - 1884 - 434 pages
...the fixed point is inside the circle, outside the circle, and on the oce. BOOK III. DEFINITIONS. 1. **A circle is a plane figure contained by one line which...circumference, and is such that all straight lines drawn** from a certain point within the figure to the circumference are equal. This point is called the centre... | |
| Euclides - 1884 - 214 pages
...is the extremity of anything. XIV. A figure is that which is enclosed by one or more boundaries. XV. **A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn** from a certain point within the figure to the circumference, are equal to one another. XVI. And this... | |
| Euclides - 1884 - 182 pages
...figure ACDE. 1. What is the word ' area ' used for, and what does ' figure ' then mean ? 8. CIRCLES. 15. **A circle is a plane figure contained by one line,...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. And this... | |
| Mathematical association - 1884 - 146 pages
...3. A circle may be drawn with any centre, with a radius equal to any finite straight line. DEF. 41. **A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn** from a certain point within the figure to the circumference are equal to one another. This point is... | |
| |