## Prealgebra (7th Edition)

$\angle x=98^{\circ}$
We can see, that the sum of the two angles ($82^{\circ}$ and $x$) is a straight angle ($180^{\circ}$). This means that the two angles are supplementary. We can write the following equation: $82^{\circ}+\angle x=180^{\circ}$ $\angle x=180^{\circ}-82^{\circ}$ $\angle x=98^{\circ}$