Question

2. Given lines a l 6, and mZl=112, determine all the angle measures. (Unit 5)11212345678.

Answer 1

∠1 and ∠4 are vertical opposite angles, these angles are congruent so that

$\angle1=\angle4=112º$

∠1 and ∠2 are a linear pair, they are adjacent supplementary angles and add up to 180º

To determine the measure of ∠2 you have to do as follows

$\begin{gathered} \angle1+\angle2=180º \\ \angle2=180º-\angle1 \\ \angle2=180º-112º \\ \angle2=68º \end{gathered}$

∠2 and ∠3 are