a rhombusNotice that if all 4 sides are equal, then they must be parallel.
Square. Square is a quadrilateral and all sides are equal and opposite sides are parallel, the sum of the interior angle measure 3600.
If both sets of opposite sides are parallel and not equal, the shape cannot be a plane figure. It must be a projection of a parallelogram onto a spherical surface (or similar).
The answer to this question is a parallelagram
its a rhombus