The set of all points in a plane that are equidistant from a given point is called a Circle. The given point is called Centre.
What is meant by Equidistant?
Equidistant means that the distance of any point on one line from the nearest point on the other line is the same for all points.
What is a Circle?
A circle is basically a shape which consists of all points in a plane that are equidistant from a given point, the centre. Equivalently, it is the curve carved out by a point which moves in a plane so that its distance from a given point remains constant. The distance between any point on the circle and the Centre is called the radius. Generally, the radius is required to be a positive number.
Specifically, a circle is a simple closed curve that divides the plane into two regions: an interior and an exterior.
What is meant by Centre?
Centre is a point which is equally distant from every point on the circumference of a sphere or circle.
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