opserva figura 3 ex 9 va rog dau coroana

a)∡AOB; ∡BOC; ∡AOC.
b)∡AOB + ∡BOC= ∡AOC
40+55=95
c) ∡AOC- ∡ AOB = ∡BOC
107-40= 67
Sper ca te am ajutat <3 <3 !!