What is the magnitude of the central angle when the magnitude of the corresponding inscribed angle is

a) [[$ 25° $]]?



Answer: The central angle is [[$ ° $]].

b) [[$ 70° $]]?



Answer: The central angle is [[$ ° $]].

c) [[$ 100° $]]?



Answer: The central angle is [[$ ° $]].

d) [[$ 2x $]]?



Answer: The central angle is [[$ ° $]].