There are infinitely many possible answers. For example, any regular polygon with an even number of sides.
shape no pairs of perpendicular sides
Any polygon can have only 1 pair of perpendicular sides.
I suppose. All of a square's sides are perpendicular.
A triangle has no parallel sides but a right angle triangle has perpendicular sides that meet at 90 degrees.
trapezium
The first geometric shape that comes to mind with no perpendicular sides is a triangle.
Any shape, other than a triangle can have a pair of perpendicular sides.
A square or a rectangle has perpendicular sides that meet each other at right angles which is 90 degrees.
The question contradicts itself. A dodecagon need not have any perpendicular sides.
shape no pairs of perpendicular sides
Any polygon can have only 1 pair of perpendicular sides.
I suppose. All of a square's sides are perpendicular.
No but its diagonals are perpendicular
No not normally
A right angle has one pair of perpendicular sides.
Square, rectangle and ovals.
Put 2 lines on the perpendicular sides and put 1 line for the parallel sides