# Chapter 2 - Reasoning and Proof - 2-6 Proving Angles Congruent - Lesson Check: 2

B) 20

#### Work Step by Step

Use the Vertical Angles Theorem to write an equation and solve for x. $6x+16=136\longrightarrow$ Subtraction Property of Equality $6x=120\longrightarrow$ Division Property of Equality $x=20$

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