A square or a rectangle has perpendicular sides that meet each other at right angles which is 90 degrees.
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The question contradicts itself. A dodecagon need not have any perpendicular sides.
The only requirement for a trapezoid is that one pair of opposite sides be parallel. There could be trapezoids with a pair of perpendicular lines.
A`isoseles duhhh
[object Object]
An irregular hexagon.