[tex]\text{Hello there!}\\\\\text{We know the that the exterior angle (x) is the sum of the opposite interior}\\ \text{angles}\\\\\text{This means that you would add 72 and 37}\\\\72+37=109\\\\\text{Or, you can do this method:}\\\\\text{Find the missing interior angle by adding 72 and 37 and subtracting}\\\text{it by 180}\\\\180-72-37=71\\\\\text{Now, find the exterior angle by subtracting 180 by 71}\\\\180-71=109\\\\\boxed{x = 109\,\,\text{degrees}}[/tex]
