Definition of Center of a Circle, Radius of a Circle and Diameter of a Circle
The origin or center of a circle is the center point in a circle from which all the distances to the points on the circle are equal.
The radius of a circle is a straight line joining the origin or center of a circle to any point on the circle.
The diameter of a Circle is a straight line joining any two points on the circle such that it passes through the center or origin of a circle.
Radius of a circle is half of its diameter.
That is,
Or conversely, diameter of a circle is double of its radius.
RELATED POST:
- How to find Radius of a Circle if co-ordinates of Center and any other point on circle are given
- Formulas of Area and Perimeter of Circle and Semi-Circle
- How to find Diameter of a Circle if its Area is given
- How to find Area between two Concentric Circles
- How to find Area of Sector of a Circle if Diameter of a Circle and Sector Area are given