Final answer:
Since all squares are rectangles and all rectangles are polygons, it follows that all squares must be considered polygons.
Step-by-step explanation:
The question can be understood by analyzing the relationship between different geometric figures. Given that all squares are rectangles, and all rectangles are polygons, it logically follows that all squares must be polygons as well. This is because a square is a specific type of rectangle with all four sides of equal length, and since every rectangle is a polygon, which is a closed figure with at least three straight sides and angles, a square inherits this property by being a rectangle.
A polygon is a broad classification that encompasses any flat, two-dimensional shape with straight sides that are fully closed. Both rectangles and squares fit this description, therefore, squares are indeed polygons.