To have no symmetry the four sides would all have different lengths, and each angle would also be different. The figure would not look like a square or a rectangle, but would instead be an irregular 4-sided polygon.
Any 4 sided shape is a quadrilateral. If all sides are of different lengths, that is as specific as you can get. Other 4 sided shapes have special characteristics about them, so they are given special names. They are still quadrailaterals.
That would be "perimeter". The perimeter is the distance around a figure, and it is calculated by adding the lengths of the different sides. For example, for a triangle, add the lengths of the three sides.
a 4 sided figure where there are 2 sets of parallel sides, and all angles are 90 degrees. A rectangle is a quadrilateral with four right angles. Pairs of lengths can be equal, as in a square; or they can be different, like a sheet of paper. like a square but two sides are longer than the other two
They are all 4 sided quadrilaterals but a trapezoid is different from the rest of them because it has only 1 pair of parallel sides of different lengths whereas all the rest have 2 pairs of parallel sides. A kite is also a 4 sided quadrilateral
Any four sided figure will actually fit this description, regardless of shapes or side lengths. The sum of the angles of every four sided figure, no matter what the dimensions of each individual side may be, is always 360 degrees.
A 4 sided trapezoid can also be transformed into a 4 sided isosceles trapezoid which will have equal base angles and 1 line of symmetry. Both have a pair of opposite parallel sides of different lengths.