$\"\"$

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The $\"\"$ is an equilateral triangle, measures of each side are same.

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$\"\"$ ( $\"\"$ is equilateral)

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$\"\"$ (Add 2 to each side)

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$\"\"$ (Subtract 3x from each side)

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The value of x is 3. $\"\"$

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Measures of each angle in an equilateral triangle is $\"\"$ .

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So, $\"\"$ .

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Since $\"\"$ , $\"\"$ .

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Thus, $\"\"$ . $\"\"$

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Solve for y:

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$\"\"$ (Angle sum theorem)

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$\"\"$ (Substitution)

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$\"\"$ (Add: $\"\"$ )

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$\"\"$ (Subtract 90 from each side)

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$\"\"$ (Divide each side by 5)

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The value of y is 18. $\"\"$

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The values of $\"\"$ and $\"\"$ .