CK-12 Geometry-Concepts

http://www.ck12.org Chapter 9. Circles

3.

Answers:

Use the Two Secants Segments Theorem.

8 ( 8 +x) = 6 ( 6 + 18 )

64 + 8 x= 144

8 x= 80

x= 10

2.

4 ( 4 +x) = 3 ( 3 + 13 )

16 + 4 x= 48

4 x= 32

x= 8

3.

15 ( 15 + 27 ) =x· 45

630 = 45 x

x= 14

Interactive Practice