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with four sides).

sides are parallel.

pairs of opposite sides are parallel.

congruent sides and four right angles.

angles, so all rectangles are also

parallelograms and quadrilaterals.

sides.

congruent sides.

equal length.

A Quadrilateral but not a parallelogram

A Quadrilateral but **not** a parallelogram

A Quadrilateral but not a parallelogram