Please look at the attached image.

1 and 3 are 52 degrees

To find angle 3, angle 6 is given as 128 degrees then we know that the opposite angle is supplementary, and the opposite angle happens to be angle 3 so, 180 - 128 = 52 3 = 52

To find angle 1 we use the opposite diagonal property which states that opposites of a diagonal are equal, therefore we can conclude 3 = 1 Which means 1 = 52

The answer is b i’m sure