# Chapter 1 - Section 1.6 - Relationships: Perpendicular Lines - Exercises: 4

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.

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