rectangle
The shape is a square.
a square or a rectangle as the length of the sides has not been defined, if the 4 sides must be equal then it is just a square
A QUADRILATERAL has four corners and four sides, along with four angles. These do not need to be congruent (equal) but they can be.
rectangle
a regular star
square idiot
rectangle
A "parallelogram" technically is a shape where opposite sides are equal and any shape with four sides is a "quadrilateral". Every square has four sides of equal length, so a square is both a parallelogram and a quadrilateral. A rhombus(or diamond shape) can have four sides of equal length and can be a parallelogram as well, so either are possibilities.
pentagon
A regular pentagon has five sides of equal lengths.
A shape with eight sides is always an octagon. If all angles and sides are equal, it is called a regular octagon.
Any regular shaped polygon has equal angles and equal sides