1. 
Draw a circle O with radius 23. Then draw radii _{} and _{} to form an angle of 60 degrees. What is the length of _{}? 

2. 
If a minor arc makes a central angle of 58°, what is the measure of the angle made by its complementary major arc? 

3. 
If an arc makes a central angle of 94°, is it a major or minor arc? Explain how you know. 

4. 
Secants _{} and _{} are drawn to circle O. If m_{}C = 31 and m_{} = 126, find m_{}. 


6. 
Can any chord on a circle be a radius? 

7. 
Regular pentagon ABCDE inscribed in circle O with radius 5 cm. Find the length of _{} and m_{}.




10. 
An angle formed by two tangents must be less than 90 degrees. 
 True  
 False 


11. 
In a circle whose radius is 12 cm, a central angle intercepts an arc that measures 45. What is the arc length? Round your answer to the nearest hundredth of a centimeter. 

12. 
Six points lie on the circumference of a circle. How many inscribed triangles can be constructed having any three of these points as vertices? 
