The picture you are looking for is a parallelogram.
540o = 6 right angles so 5 sides (interior angles of any polygon = (2 x sides - 4) right angles.
A right trapezoid is a four-sided polygon with two right angles and two parallel sides.
A polygon with 4 or more sides can meet these requirements.
A parallelogram has 2 pairs of parallel sides.
A pallelogram or rhombus
A rhombus or a parallelogram
The given description fits that of a square which has 4 equal sides, opposite sides are parallel and it has 4 interior right angles
A rectangle is a quadrilateral with opposite sides parallel and congruent and four right angles. If all four sides are congruent, it is a square.
a rhombus, a quadrilateral without right angle, a quadrilateral with equal opposite parallel sides but no right angles
A triangle having all angles less than 90 degrees is a polygon having no parallel sides and all acute angles.
a polygon with 5 sides and 2 right angles is a pentagon
An irregular pentagon is a polygon that has five sides and two right angles. A regular polygon on the other hand does not have right angles.