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What is a Circle?




A really simple explanation of what a circle is.

This definition of a circle briefly describes what a circle is with pictures showing the center, arc, sector, segment, radius, diameter and circumference of a circle.


a circle Definition of a circle:

The circle has been around long before the beginning of ancient history. A circle is the set of points in a plane that are equidistant from a center point. What this basically means is that if you measured from the center point to the edge of the circle, then you should get the same measurement no matter what direction you measure from.
A picture of a circle showing the arc, sector and segment. A picture of a circle showing the arc, sector and segment.
A picture of a circle showing the radius. A picture of a circle showing the radius.
A picture of a circle showing the diameter. A picture of a circle showing the diameter.
A picture of a circle showing the circumference. A picture of a circle showing the circumference.

See also: Find diameter and circumference of a circle | Formula for finding the area of a rectangle

What is a circle? | What is the radius of a circle? | What is the diameter of a circle? | What is the circumference of a circle?