1. Concentric and Tangent Circles
9.2b

3. Are the radii the same?

4. Is the measure of Arc AB = XY?
30 ̊
30 ̊
Are the arc lengths the same?

5. Find the area of the shaded region.

6. Find the area of the shaded region.

8. Find the length of each radius
Find the length of each radius. Identify the point of tangency and write the equation of the tangent line at this point.

9. Find the length of each radius
Find the length of each radius. Identify the point of tangency and write the equation of the tangent line at this point.

10. A common tangent is a line that is tangent to two circles.

11. A common tangent is a line that is tangent to two circles.

12. Lesson Quiz: Part I
1. Identify each line or segment that intersects Q.

13. Lesson Quiz: Part II
2. Find the length of each radius. Identify the point of tangency and write the equation of the tangent line at this point.