Which statement about a square is true?

• A. All sides are equal
• B. The shape has more than four sides
• C. The diagonals are parallel
• D. The shape is not a polygon

Answer: (A)

In a square, all four sides have the same length. This is a defining feature of a square, making it a regular quadrilateral. Because the sides are equal and the angles are right angles, the statement that all sides are equal is true and captures what distinguishes a square from other shapes.

A square does not have more than four sides—it has exactly four—so that other description is not true. The diagonals of a square cross each other and are perpendicular, not parallel, so the claim about diagonals being parallel is incorrect. And a square is indeed a polygon, a closed figure with straight sides, so saying it is not a polygon would be false.