1. 28°
2. 38°
3. 66°
4. 158°
5. 116°
6. 142°
7. 90°
8. 90°
9. x = 70°, inscribed angle is half the intercepted arc.
10. x = 70°, inscribed angle is half the intercepted arc.
11. x = 70°, inscribed angle is half the intercepted arc.
12. x = 70°, inscribed angle is half the intercepted arc.
13. x = 70°, inscribed angle is half the intercepted arc.
14. x = 70°, inscribed angle is half the intercepted arc.
15. x = 70°, inscribed angle is half the intercepted arc.
16. x = 70°, inscribed angle is half the intercepted arc.
17. x = 100°, central angle equals its intercepted arc.
18. x = 50°, inscribed angle is half the intercepted arc.
19. x = 40°, inscribed angle is half the intercepted arc.
20. x = 40°, inscribed angle is half the intercepted arc.
Parent Tip: Review the logic above to help your child master the concept of central angles and inscribed angles worksheet answer key.