A square or a rectangle has perpendicular sides that meet each other at right angles which is 90 degrees.
Don’t know
The question contradicts itself. A dodecagon need not have any perpendicular sides.
Draw a right angle corner, then add 4 more sides that are NOT right angles...
An irregular hexagon.
A`isoseles duhhh
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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.
There are infinitely many possible answers. For example, any regular polygon with an even number of sides.
The question contradicts itself. A dodecagon need not have any perpendicular sides.
shape no pairs of perpendicular sides
A square
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.
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.