Normally none but in the form of an isosceles trapezoid its 2 non-parallel sides are of the same lengths.
Any shape with at least two straight sides can have opposite parallel and congruent sides. For example, a running track.
a trapezoid has 4 sides
A trapezoid has four sides, one set is parallel.
a trapiziod is a quadrilateral so it has 4 sides
A trapezoid or trapezium has four sides, two of which are parallel.
A trapezoid figure has 4 sides.
Two of the end sides.
The two outer sides
A parellelogram has equal sides, the trapezoid is a parallelogram.
A trapezoid is a quadrilateral shape that has four sides.
4 sides
A trapezoid is a 4 sided quadrilateral