CK-12 Geometry - Second Edition

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

15. Find all the common tangents for

⊙

Band

⊙

C.

16.

⊙

Cand

⊙

Eare externally tangent. What isCE?

17. Find the equation ofCE.

Determine whether the given segment is tangent to

⊙

K.

18.

19.

20.

Algebra ConnectionFind the value of the indicated length(s) in
⊙
C.AandBare points of tangency. Simplify all
radicals.