It's called Radius
The distance from the center of a circle to any point on the circumference is called the "radius" of the circle.
The distance around a circle is its circumference
The center of a circle is called the origin. It is a point at one end of a radius, the other end of which defines the circumference of the circle.
That point which is equidistant from every point on the circumference. It's just called the center.
The centre of a circle is simply called the cnetre. The edge may called the perimeter, the circumference or the edge.
The center isn't the locus, and a point on the circumference isn't the locus.The whole circumference of the circle is the locus.It's the locus of all points that have the same distance from the center of the circle.
A line segment with the center of a circle as one endpoint and the other endpoint on the circumference of the circle is a rdius of that circle.
Boundry of circle is called circumference.
Parts of a circle include the diameter, circumference, radius, and center. The diameter of a circle is a chord passing through the center. The center is a single point at which the distance to locations on the circumference are equal. The circumference is the perimeter of the circle. The radius of the circle is half the diameter, and the distance from the center to a point on the outlying circumference.
A line segment with its endpoints on the circumference (curve) of a circle is called a chord of that circle. If it passes through the center of the circle (which it can, but does not have to do), it is called a diameter of the circle. See the links below for more information.Is called a radius.