Properties of a parallelogram
A parallelogram is a 4 sided shape (quadrilateral), and can by identified by the following mathematical properties.
A parallelogram has two pairs of equal sides.
The angles opposites each other inside the parallelogram are the equal. Therefore, it has two pairs of equal angles.
Lines of symmetry
A parallelogram has no lines of symmetry.
The order of rotational symmetry of a parallelogram is order 2.
Basically, it looks like a slanted rectangle.