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Parallelograms (if the equal sides are opposite one another) or kites (if they are adjacent).
All quadrilaterals have two [pairs] of opposite sides and in most cases they are not equal.
Quadrilaterals are called parallelograms ONLY if both pairs of opposite sides are equal and parallel to each other.
Every quadrilateral has four sides and they are opposite each other. So, ALL quadrilaterals have both pairs of opposite sides.
A rhomboid and oblong