A square.
It's impossible for a quadrilateral to have no equal sides and have right angles.
A 4 sided polygon is called a quadrilateral. Depending on where the two right angles are, would put the quadrilateral into different subsets. For example if the two right angles are on adjacent corners (and the other 2 angles are not right angles), then it is a trapezoid. If the 2 right angles are in opposite corners, and the other 2 angles are not right angles then it would be a kite-shaped quadrilateral.
Rectangle or a square.
A quadrilateral with 4 equal sides and 4 right angles is a square.
A rhombus is a 4 equal sided quadrilateral with equal opposite acute angles and equal opposite obtuse angles with diagonals that bisect each other at right angles.
kite
a rhombus, a quadrilateral without right angle, a quadrilateral with equal opposite parallel sides but no right angles
It is a parallelogramIf one of the angles is a right angle (then they all are) and the quadrilateral is a rectangle.If both pairs of sides are equal in length (but none of the angles is a right angle) the quadrilateral is a rhombus.If the sides are equal and one of the angles is a right angle, the quadrilateral is a square.
A quadrilateral with four equal sides but no right angles is a rhombus.
A rhombus
A square
rhombus