Hexagon.
Square
It could be a trapezoid
I think this person means the trapazoid. It has only one pair of parallel sides.
A geometric shape with only one set of parallel sides is a trapezoid.
17-12____5
It could be a trapezoid having 2 right angles, an obtuse angle and an acute angle
A trapezium. It has one set of parallel sides. It has four sides.
trapezium
Cube
Set cube with front and back parallel and sides perpendicular to you. Cut diagonally though the flat top and bottom.
an octagon it has eight sides
a trapezoid