1. Circles…
SOL 6.12
Mrs. Norman
John Rolfe Middle School

2. Circles
A circle is a set of points that are the same distance from a fixed point, A

3. Diameter
The distance across the circle. The length of any chord passing through the center. It is twice the radius.

4. Radius
The distance from the center to any point on the circle. It is half the diameter.

5. Chord A line segment linking any two points on a circle.

6. Circumference
The circumference is the distance around the circle.

7. Pi = 3.14
3.14

8. Calculating Circumference

9. Calculating the Area of a Circle
Area enclosed by a circle - Math Open Reference
A= r²

15. Now You Know All About Circles