A shape with five sides would be a pentagon, but a shape can not have 5 right angles. Squares and Rectangles are both shapes with 4 sides and 4 right angles. They are the only shape with the same amount of right angles as there is sides.
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A square.
its a trapezium
Rhombus
Perpendicular side meet at right angles.
a diamon, pentagon, nonagon, heptagon