If it has only one pair of parallel sides and not two, then it's not a parallelogram.
It's a trapezium (trapezoid).
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A trapezoid has exactly one pair of parallel lines
a trapezium
No, a rhombus always has two pairs of parallel lines
A trapezoid (USA) known as a trapezium (UK) has one pair of sides parallel.
Yes, it is possible for a shape to have at least one pair of parallel lines and no lines of symmetry. For example, an irregular trapezoid has one pair of parallel sides but lacks any lines of symmetry due to its uneven angles and side lengths. This demonstrates that parallel lines and symmetry are independent properties in geometric shapes.