Anagrams . A circle is a two-dimensional shape made by drawing a curve that is the same distance all around from the center. Mathematicians use the letter r for the length of a circle's radius.
circle-A Ⓐ; The symbol of anarchism; an A inside a circle (and often extending slightly beyond it).
All points on the edge of the circle are at the same distance from the center.
The distance r from the center is called the radius, and the point O is called the center.
Noun. Circles have many components including the circumference, radius, diameter, arc length and degrees, sector areas, inscribed angles, chords, tangents, and semicircles. The angle a circle subtends from its center is a full angle, equal to 360 degrees or 2pi radians. The symbol is derived from the slogan "Anarchy is Order" by French anarchist Pierre-Joseph Proudhon. Clarice The radius of a circle is the length of the line from the center to any point on its edge. 1. circle - ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; "he calculated the circumference of the circle". In the figure above, drag the orange dot around and see that the radius is always constant at any point on the circle. A circle is a round, two-dimensional shape. Circle definition, a closed plane curve consisting of all points at a given distance from a point within it called the center.
The radius of a circle is a line from the centre of the circle to a point on the side. The plural form is radii (pronounced "ray-dee-eye"). Created with sketchtool. See more.
(geometry) A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center). Equation: x2 + y2 = r2.