$\"\"$

Given that $\"\"$ .

From the figure $\"\"$ forms linear pair.

$\"\"$ (Supplementary theorem)

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Add)

$\"\"$ (Divide each side by 4) $\"\"$

Use the value of x to find the measures.

$\"\"$ (Given) $\"\"$ (Given)

$\"\"$ (Substitute $\"\"$ ) $\"\"$ (Substitute $\"\"$ )

$\"\"$ (Simplify) $\"\"$ (Simplify) $\"\"$

The angle measures are $\"\"$ and $\"\"$ .