Answer:
52 because D is a right angle,so 90 - 38 will give you 32
another interesting thing that can help you in math, the opposite sides if a quad are always equal, in this case D and B is equal,and C and A is equal.If you add C and a it will give you 180 degrees and if you add d and b it will give you 180 degrees
so 180 + 180