All squares are rhombuses and also rectangles.
Square and rhombuses are two-dimensional, flat-shaped, closed geometric figures, made of four sides and four angles. The opposite sides are parallel to each other. So, we can say that squares are a special type of rhombuses.
Also, squares and rectangles are two-dimensional, flat-shaped, closed geometric figures, made of four sides and four angles. The interior angles of both figures are equal to and the sides are parallel to each other.
Hence, the given statement that all squares are rhombuses and also rectangles is true.