2. All About Circles

3. Circles are everywhere!

4. OP is the radius of the circle

5. radius: distance f rom center of circle to any point on it.

6. Do circles have more than one radius? Yes! They have many radii!

7. The diameter= 2 times the radius AB is the diameter

8. diameter: the longest distance from one end of a circle to the other.

9. If OB is 8, what is the length of AB?

10. CD is a Chord !

11. chord: a line segment within a circle that touches 2 points o n the circle.

12. FZ is a Tangent

13. tangent of circle: a line perpendicular to the radius that touches ONLY one point on the circle

14. Angle OFC = 90 degrees !

15. line MR is a Secant

16. A s ss secant is a line intersecting a circle at t tt two points.

17. Time for a quiz…

23. Good Job!

24. Thank you Mrs. Guest-Johnson Copyright 2006