1. Welcome back. Warm up Use Pythagorean Theorem to find the missing side. Round to the nearest tenths. 8.2 yd 8.3 m 2.2 ft

2. TANGENTS A line is tangent to the circle only if it is perpendicular to the radius drawn to the point of tangency

3. Is AD tangent or not tangent? No, point D is not tangent to the circle.

4. Is AB tangent or not tangent? Use Pythagorean Theorem to find out. Yes 68 2 + 51 2 = 85 2

5. Is AB tangent or not tangent? Use Pythagorean Theorem to find out. No 8 2 + 16 2  19 2

6. BC is a radius of Circle C AB is tangent to Circle C Solve for x. x 2 + 96 2 = 100 2 x = 28

7. Solve for x. BC is a radius of Circle C AB is tangent to Circle C x 2 + 48 2 = 80 2 x = 64

8. Solve for x. BC is a radius of Circle C AB is tangent to Circle C x 2 + 32 2 = (x + 16) 2 32x = 768 x = 24

9. Solve for x. BC is a radius of Circle C AB is tangent to Circle C x 2 + 56 2 = (x + 32) 2 64x = 2112 x = 33

10. Solve for x. BC is a radius of Circle C AB is tangent to Circle C x 2 + 99 2 = (x + 81) 2 162x = 3240 x = 20

11. P. 207

14. Solve for x.  7.1 6 x

15. EF EG

16. Solve for x. Round to the nearest tenth.

17. Party Hat Problems (Tangent/Tangent)

18. R S T If two segments from the same exterior point are tangent to a circle, then they are congruent. Party hat problems!

21. C P

22. T S Q P N R

23. ? Homework