A 4-sided flat shape with straight sides that:

• has two pairs of sides.

• each pair is made of two adjacent sides (they meet) that are equal in length.

Also, the angles are equal where the pairs meet.

Diagonals (dashed lines) meet at a right angle, and one of the diagonal bisects (cuts equally in half) the other.

Try moving any point below:

• has two pairs of sides.

• each pair is made of two adjacent sides (they meet) that are equal in length.

Also, the angles are equal where the pairs meet.

Diagonals (dashed lines) meet at a right angle, and one of the diagonal bisects (cuts equally in half) the other.

Try moving any point below: