It could be a trapezium, or an irregular pentagon, hexagon, heptagon etc.
trapezoid
trapezium
Strictly speaking you cannot have one parallel side - you must have one pair. Any irregular polygon with four or more sides can have a pair of parallel sides. Most have no specific names - the only one that does is a trapezium.
It is a trapezoid which has 1 pair of opposite parallel sides of different lengths
If you mean one pair of parallel lines, then you're talking about a trapezoid.
It is not possible to have 1 parallel side since it must be parallel to another side. A four sided shape with 1 PAIR of parallel sides is a trapezium (or trapezoid).
A trapezoid has 4 sides with one pair of opposite parallel sides of different lengths.
An isosceles trapezoid.
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.
a rectangle, which has two sets of parallel side
A trapezoid would fit the given description which has only 1 pair of parallel sides of different lengths
Answer: trapezoid Answer: There is no such thing as "one parallel side". Parallel refers to the relationship between TWO lines - so, two lines can either be parallel, or not be parallel. A shape can have one PAIR of parallel sides (e.g. a trapezoid), two PAIRS of parallel sides (e.g., a parallelogram), or more than that (e.g., a regular hexagon has three pairs of parallel sides).