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Parts of a Circle
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2. Introduction
A circle has different parts. Today, we are going to look at the following:
Center
Radius
Diameter
Circumference
Arc
Sector
Chord
Segment

3. Center The center of a circle is the exact middle of that circle.
The center of this circle

4. Radius
The radius of a circle is a line from any point on the border of the circle to the center point.
Three radii of this circle

5. Diameter
The diameter of a circle is a line that stretches from one side of a circle to another, running through the center point.
A diameter of this circle

6. Circumference
The circumference of a circle is the entire border of the circle.
The circumference of this circle

7. Arc An arc of a circle is a portion of the circumference.
An arc of this circle

8. Sector
A sector of a circle is a portion of the circle bordered by two radii and an arc.
A sector of this circle

9. Chord
A chord of a circle is a line that stretches between two points on the circumference of that circle.
A chord of this circle

10. Segment
A segment of a circle is a portion of the circle bordered a chord and an arc.
A segment of this circle

11. Congratulations!
You now know the parts of a circle!