 | Euclides - 1838 - 264 pages
...is less than a right angle. XI. A figure is that which is enclosed by one or more boundaries. XII. A circle is a plane figure contained by one line,...drawn from a certain point within the figure to the circum ference, are equal to one another. XIII. And this point is called the centre of the circle,.... | |
 | Euclides - 1842 - 316 pages
...which is greater than a right angle. XII. An acute angle is that which is less than a right angle. XIV. A figure is that which is inclosed by one or...figure to the circumference are equal to one another. XVL This point is called the centre of the circle. XVII, A diameter of a circle is a straight line... | |
 | John Playfair - Euclid's Elements - 1842 - 332 pages
...contained in a figure, without any reference to the nature of the line or lines which bound it.m 1 1 . A circle is a plane figure contained by one line,...figure to the circumference, are equal to one another . 12. And this point is called the centre of the circle. 13. A diameter of a circle is a straight line... | |
 | T H. Howe - 1842 - 458 pages
...taken and joined by a straight line, the straight line will lie altogether in that surface or plane. FA Circle is a plane figure, contained by one line which...figure to the circumference, are equal to one another. c That point within the circle which is thus equally distant from the circumference, is called the... | |
 | Scottish school-book assoc - 1845 - 444 pages
...figure is that which is enclosed by one or more boundaries. 14. A circle is a plain figure bounded by one line, which is called the circumference, and...all straight lines drawn from a certain point within it to the circumference are equal to one another; 15. And this point is called the centre. 16. The... | |
 | Euclid, James Thomson - Geometry - 1845 - 382 pages
...rhomboid is a parallelogram trhich has not its adjacent sides equal, nor its angles right angles. 30. A circle is a plane figure contained by one line,...which is called the circumference* and is such that R all straight lines drawn from a certain point within the figure to the circumference are equal to... | |
 | W. PEASE - 1846 - 86 pages
...&c. ; but geometrically, that only is a figure, which has either superficial or solid content. 28*. A Circle is a plane figure contained by one line,...figure to the circumference, are equal to one another. 29*. And this point is called the Centre of the circle. A circle is the superficies or space enclosed... | |
 | Euclid, John Playfair - Euclid's Elements - 1846 - 334 pages
...contained in a figure, without any reference to the nature of the line or lines which bound it. 11. A circle is a plane figure contained by one line,...figure to the circumference, are equal to one another. 12. And this point is called the centre of the circle. 13. A diameter of a circle is a straight line... | |
 | W. M. Buchanan - Science - 1846 - 768 pages
...magical operations. CIB'CLB, Lat. circulus, from circus. A geometrical figure contained under one line called the circumference ; and is such, that all straight...lines drawn from a certain point within the figure called the centre, to the circumference, arc equal to one another. Thus, In the figure, AB = AC = AD.... | |
 | Euclides - 1846 - 272 pages
...called acute. 14. A plane figure is a plane superficies, bounded on every side by one or more lines. 15. A circle is a plane figure, contained by one line, which is called the circumference ; to which from a certain point within the figure, all right lines drawn are equal. 16. That point... | |
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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. 
