Answer:
Square
Step-by-step explanation:
A rectangle can be tall and thin, short and fat or all the sides can have the same length. Definition: A square is a quadrilateral with all four angles right angles and all four sides of the same length. So a square is a special kind of rectangle, it is one where all the sides have the same length.
Answer: a square
Step-by-step explanation: if all sides are the same length then it is a square it is also a type of rectangle