1. 
Regular octagon ABCDEFGH is inscribed in circle O. Diameter _{} is extended as shown. Find (a) m_{} (b) m_{}ABF (c) m_{}HJG (d) m_{}K.



3. 
Tangent _{} intercepts circle O at B. Chord _{} is drawn. If m_{} = 58, find m_{}CBD. 

4. 
In circle O, diameter _{}, radius _{}, and chord _{} are all drawn. If m_{}AOC = 50, find m_{}OCB. 

5. 
Congruent inscribed angles always intercept congruent arcs. 
 False  
 True 


6. 
In circle O, chords _{} and _{} intersect at E. m_{} = 63 and m_{}CEB = 83. Find the sum of the measures of _{} and _{}. 

7. 
Tangents _{} and _{} are drawn to circle O. If the measure of major _{} is 242, find m_{}C. 

8. 
How is it possible for a huge circle and a tiny circle to each have the same number of degrees? 

9. 
What is the relationship between a central angle and an angle inscribed in the same arc? 

10. 
In circle O, secant _{} and chord _{} intersect. If m_{} = 186 and m_{} = 47, find m_{}CBD. 

11. 
There is no rule for an angle formed by a secant and a chord. How do you find its measure? 

12. 
The measure of a minor arc is defined to be the measure of its ______. 
