I suppose. All of a square's sides are perpendicular.
Yes.
trapazoid
[object Object]
Any shape, other than a triangle can have a pair of perpendicular sides.
a trapazoid
trapezoid
The question contradicts itself. A dodecagon need not have any perpendicular sides.
It could be a right angle triangle
shape no pairs of perpendicular 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.
No but its diagonals are perpendicular