Answer
1. m$\angle$AOB=m$\angle$1 and m$\angle$BOC=m$\angle$1
2. m$\angle$AOB=m$\angle$BOC
3. $\angle$AOB≅$\angle$BOC
4. $\overline{OB}$ bisects $\angle$AOC
Work Step by Step
Statement 1 is given in the problem. Statement 2 can be proven using substitution. The definitions of congruent angles and angle bisectors allows you to prove statements 3 and 4.
