 | Thomas Curtis - Aeronautics - 1829 - 814 pages
...called the radii of the circle. The circumference itself is also often called a circle. Fig. 20. 31. The DIAMETER of a circle is a straight line passing through the centre, and terminated both ways by the circumference. 32. An ARC of a circle is any part of its circumference.... | |
 | Ireland commissioners of nat. educ - 1834 - 370 pages
...each figure be equal, it is called a regular polygon ; but if unequal, an irregular polygon. 34. The Diameter of a circle is a straight line passing through the centre, and terminated by the circumference ; thus AB is the diameter of the circle. The diameter divides the circle... | |
 | Commissioners of National Education in Ireland - Measurement - 1837 - 290 pages
...each figure be equal, it is called a regular polygon ; but if unequal, an irregular polygon. 34. The Diameter of a circle is a straight line passing through the centre, and terminated both ways by the circumference ; thus AB is the diameter of the circle. The diameter divides... | |
 | J. M. Scribner - Measurement - 1844 - 130 pages
...is equally distant from a certain point within, called the centre ; J1EBD (fig. 1) is a circle. 2. A Diameter of a circle is a straight line, passing through the centre and terminating at the circumference ; as AB (fig. 1.) 3. A Radius or Semi-Diameter is a straight line,... | |
 | James S. Russell - Arithmetic - 1847 - 340 pages
...equally distant from the centre. 32. The circumference of a circle is the curved line enclosing it. 33. A diameter of a circle is a straight line passing through the centre and terminated by the- circumference. 34. A radius is a straight line extending from the centre o the circumference... | |
 | Elias Loomis - Conic sections - 1849 - 252 pages
...the circle. 2. A radius of a circle is a straight line drawn from the center to the circumference. A diameter of a circle is a straight line passing through the center, and terminated both ways by the circumference. Cor. All the radii of a circle sre equal; all... | |
 | J. M. Scribner - Mechanical engineering - 1849 - 286 pages
...circumference, every part of which is equally distant from a certain point within, called the center. 2. A diameter of a circle is a straight line, passing through the center, and terminating at the circumference. 3. A radius or semi-diameter is a straight line, extending... | |
 | Charles Davies - Geometry - 1850 - 238 pages
...circumference of a circle. 25. Any portion of the circumference, as AED, is called an arc. 26. The diameter of a circle is a straight line passing through the centre and terminating at the circumference. Thus, ACB is a diameter. 27. One half of the circumference, as A... | |
 | Charles Davies - Geometry - 1850 - 218 pages
...circumference of a circle. 25. Any portion of the circumference, as AED, is called an arc. 26. The diameter of a circle is a straight line passing through the centre and terminating at the circumference. Thus, ACB is a diameter. 27. One half of the circumference, as ACB... | |
 | Thomas Urry Young - Education, Elementary - 1852 - 296 pages
...curved line, called its circumference, every part of which is at the same distance from the centre. The diameter of a circle is a straight line passing through the centre, and bounded by the circumference. The radius is a straight line drawn from the centre to the circumference.... | |
| |
A circle is a plane figure bounded by a line, every point of which is equally distant from a point within, called the center. 
