The value of x is 35.
What are angles?
An angle is a figure in Euclidean geometry made up of two rays that share a common terminal and are referred to as the angle's sides and vertices, respectively. Angles created by two rays are in the plane where the rays are located. The meeting of two planes also creates angles. We refer to these as dihedral angles.
Given
a straight line angle = 180
40 + 2x + 30 + 40 = 180
110 + 2x = 180
2x = 70
x =35
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