A square, in geometry, is a four-sided polygon known as a quadrilateral. It has equal sides and four right angles, making it a special type of rectangle and rhombus. The properties of a square include symmetry and equal diagonals that bisect each other at right angles. In a broader context, the term "fair" often refers to the concept of justice or equality. In various situations, fairness implies that everyone receives equal treatment or opportunities. This principle is essential in areas like law, education, and social interactions, ensuring that individuals are treated without bias or favoritism.