 | John Lowres - 1870 - 130 pages
...obtuse, as 0 PQ ; and when less, acute, as E s T. THE CIRCLE &c. A Circle is a plane figure formed by one curved line called the CIRCUMFERENCE, every point of which is equally distant from a point within it called the CENTRE. By the term ' circle ' is meant either the circumference only, or the surface... | |
 | Anthony Nesbit - 1870 - 578 pages
...regular polygon has all its sides and angles equal, they are unequal the polygon is irregular. 38. A circle is a plane figure bounded by a curved line called the circumference, which is everywhere equidistant from a certain point within it, called the centre. 39. The circumference... | |
 | Benjamin Greenleaf - Arithmetic - 1870 - 336 pages
...9.162-f- feet. THE SPHERE. 362. A Sphere is a solid, bounded by orie continued convex surface, every part of which is equally distant from a point within, called the center. The Axis or Diameter of a sphere is a line passing through the center, and terminated by the surface. 359.... | |
 | Alfred Hiley - 1871 - 184 pages
...; and at 300, 0. Find the area. XI. THE CIRCLE.— THE CIRCUMFERENCE AND DIAMETER. Definitions. — A circle is a plane figure bounded by a curved line called the circumference or perimeter, and is such, that all lines drawn from the centre to the circumference are equal. AB... | |
 | Benjamin Greenleaf - Arithmetic - 1871 - 350 pages
...9.162-J- feet. THE SPHERE. 362. A Sphere is a solid, bounded by one continued convex surface, every part of which is equally distant from a point within, called the center. The Axis or Diameter of a sphere is a line passing through the center, arid terminated by the surface.... | |
 | Elias Loomis - Geometry - 1871 - 302 pages
...CIRCLE, AND THE MEASURE OF ANGLES. Definitions. 1. A circle is a plane figure bounded by a line, evory point of which is equally distant from a point within, called the center. This bounding line is called the circumference of the circle. 2. A radius of a circle is a straight... | |
 | William Frothingham Bradbury - Geometry - 1872 - 124 pages
...described on the diagonal of a square is double the square itself. BOOK III. THE CIRCLE. DEFINITIONS. 1. A Circle is a plane figure bounded by a curved line...which is equally distant from a point within called the centre ; as ABD E. 2. The Eadius of a circle is a line drawn from the centre to the circumference... | |
 | William Frothingham Bradbury - Geometry - 1872 - 262 pages
...triangles similarly situated are similar. BOOK III. F THE CIRCLE. DEFINITIONS. 1. A Circle is a piano figure bounded by a curved line called the circumference,...which is equally distant from a point within called the centre ; as ABD E. 2. The Radius of a circle is a lino drawn from the centre to the circumference... | |
 | Eli Todd Tappan - Geometry - 1873 - 288 pages
...circle. Hence, the following definitions: A CIRCLE is a portion of a plane bounded by a line called a CIRCUMFERENCE, every point of which is equally distant from a point within called the CENTER. 146. Theorem — A circumference is curved throughout. For a straight line can not have more than two... | |
 | Charles Davies - Geometry - 1872 - 464 pages
...AND TIIK MEASUREMENT OF ANGLES DEFINITIONS. 1. A CIRCLE is a plane figure, bounded by a curved line, every point of which is equally distant from a point within, called the centre. The bounding line is called the circumference. 2. A RADIUS is a straight line drawn from... | |
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A circle is a plane figure bounded by a curved line called the circumference, every point of which is equally distant from a point within called the center. 
