How many lines of symmetry does a paraelleogram have?

Answer 1

A parallelogram need have no lines of symmetry.

Answer 2

A parallelogram has no lines of symmetry. This is true as the lines of symmetry of a parallelogram must either be a diagonal of the parallelogram or must be bisectors of opposite sides. There is no way to draw such lines through a general parallelogram and have it produce mirror images on either side of the line. Thus, it has no lines of symmetry.