1. 
Diameter _{}, chord _{}, and radius _{} are drawn in circle O. If m_{}B = 18, find m_{}AOC. 

2. 
The measure of a minor arc is defined to be the measure of its ______. 

3. 
There is no rule for an angle formed by a secant and a chord. How do you find its measure? 

4. 
Diameter _{} is extended through B to C. Tangent _{} is drawn. If m_{} = 32, find m_{}C. 


6. 
An angle formed by two tangents must be less than 90 degrees. 
 True  
 False 


7. 
Chords _{} and _{} are drawn to circle O. If m_{}B = 53, find m_{}. 

8. 
In circle O, m_{}AOB = 69. Find the measure of major _{}. 

9. 
If m_{}x = 31, find the measure of _{}.


10. 
Triangle ABC is inscribed in circle O. If m_{} = 54, find m_{}BAC.


11. 
What property of circles explains why they are round? 

12. 
Tangents _{} and _{} are drawn to circle O. If the measure of minor _{} is 66, find m_{}B. 

13. 
ABCD is an inscribed quadrilateral in a circle. If m_{}ABC = 104, find m_{}ADC. 

14. 
In circle O, chords _{} and _{} intersect at E. If m_{} = 59 and m_{} = 114, find m_{}CEB. 
