In a rectangle, the dimensions refer to which measurements?

• A. Length and Width
• B. Width and Height
• C. Height and Depth
• D. Area and Perimeter

Answer: (A)

Two measurements determine a rectangle’s size: how long its horizontal side is and how wide its vertical side. These are called length and width. They define the flat shape in the plane, and from them you can find area (length times width) and perimeter (2 times the sum of length and width). Height and depth belong to three-dimensional contexts, and area and perimeter are properties derived from the dimensions, not the dimensions themselves. So the measurements that refer to the dimensions are length and width.