Question

Which of the following is not a property of the square?

• A. All the sides are equal in length.
• B. All the angles are equal to ${90}^{\circ }$.
• C. Diagonals bisect each other.
• D. Diagonals are unequal in length.

Answer 1

The correct option is D Diagonals are unequal in length.

A square is a rectangle with all sides equal.

Therefore, all the sides are equal and the angles are equal to ${90}^{\circ }$.

This means the first two options are correct.

The square is a type of parallelogram which means the diagonals bisect each other.

The last option says that the diagonals are unequal. This is incorrect because all the sides are equal, all the angles are equal which makes the length of diagonals equal as well.