
Directions: Read carefully!
1. 
Line segment is tangent to circle O at point A. Which type of triangle is always formed when points, A, B and O are connected?
Choose:



2. 
Given circle O with tangents
and . Find x.
Choose:



3. 
Given circle O with tangent .
Find x.
Choose:



4. 
Segments shown are tangents to the circles. Find x.
Choose:



5. 
Given circle O with tangents
and . If AB = 15 and
AO = 17, find OC.
Choose:



6. 
Given circle O with AB = 8 and
OB = 5. Find the length of tangent .
Choose:



7. 
Given circle O tangents as shown.
Find x.
Choose:



8. 
Given circle O with a radius of 9, AB = 24, and BC = 30. Is a tangent to circle O?
Choose:



9. 
Given circle O with tangents
and . If m∠ABC = 74º,
find m∠A.
Choose:




10. 
Given circles O and M sharing external tangents and . The points of tangency are B, C, D, and E. The ratio of AB to BC is 3 to 2. If AE = 35, find DE.



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