Based on the dimensions for the fold lines of the part above, the part is not square in the corners. It is my understanding that the short sides are actually at an angle other than 90 to the long sides.
- What lines can I trust as being perpendicular or parallel to the the datum line?
- What point on the fold lines are the dimensions referencing? Would it be where the fold line meets the part edge, where the fold lines intersect or some other point as I am misreading this drawing?