1. Warmup
Find x.
1) )

2. Segment Lengths in Circles

3. Go down the chord and multiply
Two chords intersect
INSIDE the circle
part
part
part
part
Emphasize that the chords are NOT congruent or bisected!
Go down the chord and multiply

4. Sometimes you have to add to get the whole.
Two secants intersect
OUTSIDE the circle
Sometimes you have to add to get the whole.

5. Solve for x. 20
x = 31 7 4 x 7
(20) =
(4 + x) 4
140 = x
124 = 4x

6. x = 11.8 Solve for x. x 5 8 6 6 (6 + 8) = 5 (5 + x) 84 = 25 + 5x

7. x = 6 Solve for x. 10 x 4 8 x (x + 10) = 8 (8 + 4) x2 +10x = 96

8. Secant and Tangent

9. x = 36 Solve for x. 242 = 12 (12 + x) 576 = 144 + 12x 432 = 12x x 12

10. Solve for x. 5 15 x
x = 10 x2 = 5
(5 + 15)
x2 = 100

11. Practice
Worksheet

12. Homework
Worksheet