To find the measure of the missing angle \( x \) in a triangle, you can use the triangle sum theorem, which states that the sum of the angles in a triangle is always \( 180^\circ \).
If you know the measures of the other two angles in the triangle, you can calculate \( x \) using the equation:
\[ x = 180^\circ - (\text{angle 1} + \text{angle 2}) \]
Unfortunately, without access to the specific image and the measures of the other angles, I cannot provide the exact value of \( x \). You can replace "angle 1" and "angle 2" with their respective measures if you have that information.
Please provide the measures of the other angles so I can help you compute \( x \).