none.
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has two parallel sideshas four straight linesThe area of the trapezium is given by the following formula where a and b are the lengths of the parallel sides and h is the perpendicular distance between the parallel sides.
A trapezium has only one pair of parallel sides
None
A trapezium has 1 pair of opposite parallel sides of different lengths. Note that sometimes a trapezium is called a trapezoid
It may have none. A trapezium (US) has no parallel sides. A trapezoid (US, known elsewhere as a trapezium) has one side of parallel sides.