An irregular shape
A RECTANGLE has 4 sides and 4 right angles.
A shape with 4 right angles and 4 equal sides is a square. ==========================
A quadrilateral shape
Any shape with 4 acute angles must have more than 4 sides. Any shape with more than 4 sides can have 4 acute angles (but doesn't have to).
Simi-Circle have 2 angles and 4 sides
a squre think
A shape that has exactly 4 sides, 2 right angles and one pair of parallel sides is a rectangle. ~T
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.
It can be any quadrilateral shape
Angles and sides are congruent when they are identical. A shape with four identical sides and angles is a square.
A square or a rectangle both have 4 sides and 4 interior right angles