1. 
Draw a circle and inscribe an obtuse triangle in the circle. 

2. 
What is the name of the longest chord in any circle? 

3. 
Can any chord on a circle be a radius? 

4. 
Describe the three possible arcs that could be found on a circle. 

5. 
What is true of all radii of a circle? 

6. 
How many chords on a circle can be a diameter of the circle? 


8. 
Define a circle without using the word "round". 

9. 
What is an inscribed polygon? 

10. 
If an arc makes a central angle of 109°, is it a major or minor arc? Explain how you know. 

11. 
Draw a circle O with radius 22. Then draw radii _{} and _{} to form an angle of 60 degrees. What is the length of _{}? 

12. 
An isosceles right triangle inscribed in a circle. If the length of the two equal sides is 22 cm, find the radius of the circle. 



15. 
What is wrong with the statement: "All radii are congruent."? 

16. 
Jennifer is working on a sewing project. She has a circular piece of fabric, and needs to find the center. How can she do that? 

17. 
How can you illustrate the definition of a circle? 

18. 
Can any chord of a circle ever equal the radius? 
