The calculated value of x is 104 degrees and the angle relationship is that both angles are supplementary angles
How to determine the value of x
From the question, we have the following parameters that can be used in our computation:
The transversed lines
The angle relationship is that both angles are supplementary angles
using the above as a guide, we have the following:
x + 4 + 72 = 180
x + 76 = 180
So, we have
x = 180 - 76
Evaluate
x = 104
Hence, the value of x is 104 degrees