trapazoid
It could be a right angle triangle
The question does not make any sense. "Adjacent" means next to. A shape cannot be next to itself, and if it is next to another shape, then you have two shapes. "perpendicular" means at right angles (or 90 degrees) to. Again, a shape cannot be perpendicular to itself.
square
It fits the description of a right angle triangle
trapazoid
It could be a right angle triangle
The question does not make any sense. "Adjacent" means next to. A shape cannot be next to itself, and if it is next to another shape, then you have two shapes. "perpendicular" means at right angles (or 90 degrees) to. Again, a shape cannot be perpendicular to itself.
The question does not make any sense. "Adjacent" means next to. A shape cannot be next to itself, and if it is next to another shape, then you have two shapes. "perpendicular" means at right angles (or 90 degrees) to. Again, a shape cannot be perpendicular to itself.
square
It fits the description of a right angle triangle
shape no pairs of perpendicular sides
A rhombus has parallel lines but no perpendicular lines.
xfchfh
Square.
A polygon with four or more sides can meet these requirement.
square