When is a kite not a parallelogram?

A kite is not a parallelogram when its opposite sides are not equal in length. While a parallelogram has two pairs of equal-length sides and opposite angles that are equal, a kite has two pairs of adjacent sides that are equal, with one pair of opposite angles being equal. The defining characteristics of a kite do not fulfill the criteria necessary for it to be classified as a parallelogram. Therefore, kites can be considered a distinct category of quadrilaterals.