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.

The dashed lines are diagonals, which meet at a right angle. And one of the diagonals 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.

The dashed lines are diagonals, which meet at a right angle. And one of the diagonals bisects (cuts equally in half) the other.

Try moving any point below: