$\"\"$

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Given that $\"\"$ .

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

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$\"\"$ (Supplementary theorem)

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

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$\"\"$ (Simplify)

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$\"\"$ (Add 9 to each side)

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$\"\"$ (Divied each side by 3) $\"\"$

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Use the value of x to find the measures

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

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

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$\"\"$ (Subtract) $\"\"$ (Subtract) $\"\"$

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