Answer:

A circle can be drawn using compasses. All the points on the circle are the same distance, called the radius, from the center. A line joining two points on a circle is called a chord. When the line passes through the center the chord is a diameter.

Circles are simple shapes of Euclidean geometry consisting of those points in a plane which are at a constant distance, called the radius, from a fixed point, called the center. Circles are simple closed curves which divide the plane into an interior and an exterior. The circumference of a circle is the perimeter of the circle, and the interior of the circle is called a disk. An arc is any connected part of a circle.