1. Day 2 of Circles
11-1 Tangent Lines

2. Warm-Up Find the center 2. Write the eqn of
And radius of each circle the circle through
the point with the given radius:

3. Review: What is a circle?
A circle is a set of all points in a plane equidistant from a given point, the center.
Radius: segment with one
Endpoint at the center and the
Other endpoint on the circle
**All radii of a circle are congruent**

4. Name: A

5. B is the point of tangency.

6. A tangent line and a radius of a circle are perpendicular at the point of tangency.

7. Two segments tangent to a circle from the same point outside the circle are congruent.

8. Ex 1.

9. Ex,2

10. Ex 3:

11. Ex 4:

12. Ex 5

13. Ex. 6 Find the distance between the two pulleys

14. Ex 7: find the Perimeter of ABC.

15. Complete the worksheet