-A **square** is a fundamental [polygon](/wiki/polygon) in geometry, a perfectly balanced shape. It is a regular [quadrilateral](/wiki/quadrilateral), defined by four equal sides and four right angles. This simple form appears across nature and design, embodying stability and order.
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+A **square** is a fundamental [polygon](/wiki/polygon) in geometry, a perfectly balanced shape. It is a regular [quadrilateral](/wiki/quadrilateral), defined by four equal sides and four right angles. To form a square, one must ensure all four sides are of equal [length](/wiki/length) and all four [angles](/wiki/angle) measure exactly 90 degrees ([right angle](/wiki/right_angle)). This simple form appears across nature and design, embodying stability and order.