Answer:
○ 
Step-by-step explanation:

I am joyous to assist you at any time.
Answer:
80
Step-by-step explanation:
Answer:
B
Step-by-step explanation:

Answer:
6
Step-by-step explanation:
Answer: 140°
Step-by-step explanation:
If you look at ∠BXF, you can see that F is at the base of the inner semi circle. Going left, you can see that it stops at 140. Now, we know that m∠BXF is 140°.