 | Charles Richson - 1848 - 98 pages
...of the circle." (A pair of dividers or compasses will be useful in explaining this definition.} 2. "A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. ' ' 3. "A semicircle is the figure contained by a diameter,... | |
 | Euclid, Thomas Tate - 1849 - 120 pages
...circumference are equal to one another. A VI. 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 by the circumference. XVIII. A semicircle is the figure contained by a diameter... | |
 | Minard Lafever - Architecture - 1849 - 306 pages
...every where equi-distant from a certain point within the circle, called the centre. (Fig. 23.) XXXI. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. (Fig. 23.) XXXII. A radius of a circle is half of a... | |
 | Thomas Kelt - Mechanical engineering - 1849 - 424 pages
...The radius of a circle is a straight line drawn from the centre to the circumference, as O B. 4. The diameter of a circle is a straight line drawn through the centre, and terminated both ways at the circumference, as CO A. 5. A chord is a straight line joining any two... | |
 | Almon Ticknor - Arithmetic - 1849 - 170 pages
...sector is any part of a circle bounded by an arc, and its two radii drawn to its extremities. 37. The diameter of a circle is a straight line drawn through the centre, terminated both ways by the circumference. (Fig. 17.) 38. An ellipsis or oval, is a curve which returns... | |
 | Roswell Chamberlain Smith - Arithmetic - 1850 - 314 pages
...from a certain point within it, called the CENTRE. An ARC is any part of the circumference. 35. The DIAMETER of a circle, is a straight line drawn through the centre and terminating in the circumference on each side. A Q. What is a Quadrilateral? 27. Parallelogram?... | |
 | Jeremiah Day - Geometry - 1851 - 418 pages
...portion of the circumference. A semi-circle is half, and a quadrant one fourth, of a circle. % II. A Diameter of a circle is a straight line drawn through the center, and terminated both ways by the circumference. A Radius is a straight line extending from the... | |
 | Sir Henry Edward Landor Thuillier - Surveying - 1851 - 826 pages
...point within the same figure called the Centre, thus : ABDE is the circumference and C the centre. The Diameter of a circle is a straight line drawn through the centre, and terminated •*' both ways by the circumference, thus : AB is the diameter of the circle ADBE.... | |
 | Euclides - 1852 - 152 pages
...centre of the circle. [In the above figures A is the centre of the circle; B is not the centre.] XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter... | |
 | Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...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 drawn through the centre, and terminated both ways by the circumference. 18. A semicircle is the figure contained by a diameter... | |
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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. And this point is called the centre... 
