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x = 26°
Explanation:
Since mAB = 50°, and mCD = 24°, we know that opposite angles in a parallelogram are equal. Therefore, mCD = mBC = 24°. Since the sum of the angles in any quadrilateral is 360°, we can calculate the value of x by subtracting the known angles from 360°:
m x = 360° - (50° + 24°)
x = 360° - 74°
x = 26°