A square is a special type of rectangle and rhombus. To understand this, we need to look at the definitions of each shape.
A rectangle is defined as a quadrilateral with four right angles. It does not require all sides to be equal in length, just that opposite sides are equal. A square meets this definition because it has four right angles and its opposite sides are equal.
A rhombus, on the other hand, is defined as a quadrilateral where all four sides are of equal length. Likewise, a square also satisfies this definition since all of its sides are equal.
In summary, a square has all the properties of both a rectangle (four right angles) and a rhombus (four equal sides). Therefore, you can see why a square is typically referred to as a special case of both rectangles and rhombuses. It’s this unique combination of properties that allows a square to fall under both classifications.