It has two short sides and 2 long sides. A rectangle also has 4 corners ... The difference is that all of the sides of a square are the same length. Shapes with four sides are known as quadrilaterals.

Subtract the area of this square from the rectangle. Break the shape into two squares and a rectangle. Calculate the area of each shape. \(4 \times 4 = 16~\text{cm}^2\), \(4 \times 4 = 16~\text{cm}^ ...