


Related Terms 


Diameter: The distance across a circle through its center. The line segment that includes the center and whose endpoints lie on the circle. 
Area of a Circle: The measurement of the region enclosed by a circle. The area of a circle is always expressed in squared units.
Circumference: The distance around a circle.
Pi: The ratio of the circumference of a circle to its diameter.
Radius: The distance from the center of a circle to any point on the circle. Also, the line segment that has the center of the circle as one endpoint and a point on the circle as the other endpoint.


