 | 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... | |
 | William Pease - Geometry - 1843 - 80 pages
...fig. 1, &c. ; but geometrically, that only is a figure, which has either superficial or solid content. XV. A circle is a plane figure contained by one line,...And this point is called the centre of the circle. A circle is the superficies or space enclosed by its circumference. 14. A great circle is that plane... | |
 | Euclides - 1845 - 546 pages
...called a right angle ; and the straight line which stands on the other is called a perpendicular to it. XI. An obtuse angle is that which is greater than...And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways... | |
 | Euclid - Geometry - 1845 - 218 pages
...called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. XII. XIII. " A term or boundary is the extremity of any...And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways... | |
 | 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... | |
 | Euclides - 1846 - 292 pages
...which is greater than a right angle. xn. An acute angle is that which is less than a right angle. xin. A term or boundary is the extremity of any thing....And this point is called the centre of the circle. xvn. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by... | |
 | Great Britain. Admiralty - Geometry - 1846 - 128 pages
...any thing. XIV. A figure is that which is enclosed by one or more boundaries. XV. Acircle is aplane figure contained by one line, which is called the...And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both way s... | |
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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. 
