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A quadrilateral with only one pair of opposite sides is parallel.
TRAPEZOID
A quadrilateral in which two pairs of opposite sides are parallel.
PARALLELOGRAM
A parallelogram with four congruent sides and four congruent angles.
SQUARE
A quadrilateral in which two consecutive sides are congruent.
KITE
A trapezoid in which the non-parallel sides are congruent.
ISOSCELES TRAPEZOID
A parallelogram with four congruent sides.
RHOMBUS
A parallelogram with four congruent angles.
RECTANGLE