If the diagonals of a quadrilateral bisect each other, it is a __________.
Defining a parallelogram:
A parallelogram is a two-dimensional geometry whose sides are parallel to each other. This is a type of four-sided polygon (also known as a quadrilateral) with parallel sides of equal length. The diagonals of a parallelogram are bisected, but they are not equal in length.
Hence, if the diagonals of a quadrilateral bisect each other, it is a parallelogram.