A circle is a simple shape defined as the set of all points in a plane that are a given distance from a central point called the center. The distance from any point on the circle to the center is the radius. A circle divides a plane into an interior and exterior region, with the circle itself forming the boundary between them. Strictly speaking, the circle refers only to its boundary, while the entire shape including its interior region is called a disk.

1. Circles
Math Project – Task 1
Picture album
Sulaiman Group

2. Information about circles
A circle is a simple shape of Euclidean geometry that
is the set of all points in a plane that are a given
distance from a given point, the centre. The distance
between any of the points and the center is called the
radius. It can also be defined as the locus of a point
equidistant from a fixed point.
A circle is a simple closed curve which divides the
plane into two regions: an interior and an exterior. In
everyday use, the term "circle" may be used
interchangeably to refer to either the boundary of the
figure, or to the whole figure including its interior; in
strict technical usage, the circle is the former and the
latter is called a disk.