A parallelogram.
Types of parallelogram:
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a parallelogram is a tilted rectangle
A rectangle is a rectangle no matter its orientation, it does not need to be horizontal or vertical to be a rectangle, the term applies only to the internal angle of the corners which of course must be 90 degrees.
A rhombus can be a rectangle if it is a square.
A rhombus, probably.
What I mean is, a rectangle where none of the sides are the same. Like a Scalene triangle, but with a rectangle.