An irregular hexagon.
A trapezoid has at least one pair.
The question contradicts itself. A dodecagon need not have any perpendicular sides.
I think this person means the trapazoid. It has only one pair of parallel sides.
Yes it does. Do you even know what perpendicular means? It means that two sides can keep going but never touch. If you look at a prism depending on what prism it is it should have at least one pair of perpendicular sides.
trapazoid
shape no pairs of perpendicular sides
a trapazoid
trapezoid
Any shape, other than a triangle can have a pair of perpendicular sides.
It could be a right angle triangle
The first geometric shape that comes to mind with no perpendicular sides is a triangle.
I suppose. All of a square's sides are perpendicular.
Yes.
An irregular hexagon.
Trapizium
A trapezoid has at least one pair.