A quadrilateral with one pair of parallel lines would be a trapezoid. : P
sometimes
A quadrilateral with at least one pair of parallel sides has multiple possible names, depending on what type of quadrilateral it is.SquareRectangleParallelogramRhomboidTrapezoidYou are probably looking for only one pair of parallel sides, which is a trapezoid - both regular and irregular.
For the quadrilateral to be a parallelogram, both pairs of opposite angles must be congruent.
A trapezium.
TRAPEZOID
It can be but it need not be.
trapezoid
It is a trapezoid that has only one pair of opposite parallel lines of different lengths.
It is a trapezoid which has 1 pair of opposite parallel sides of different lengths
A quadrilateral with only one pair of parallel sides is a trapezoid (U.K. trapezium)
A quadrilateral that has only one pair of parallel sides (the other pair not parallel) is a trapezium.
British definition differs with USAUSATrapezoidA quadrilateral with one pair of parallel sidesTrapeziumA quadrilateral with no sides parallelBritishTrapezoidA quadrilateral with no sides parallelTrapeziumA quadrilateral with one pair of parallel sides
No. It can also be a kite.If one pair of adjacent sides of a parallelogramare congruent, then the quadrilateral is a rhombus.
Only one pair: trapezium.
sometimes
Parallel
A trapezium.