A quadrilateral has 4 sides.

Quick Scoop

  • In geometry, a quadrilateral is any polygon with four straight sides.
  • Because “quad” means four, every quadrilateral always has 4 sides, 4 vertices (corners), and 4 angles.
  • Common examples of quadrilaterals are squares, rectangles, parallelograms, rhombuses, kites, and trapezoids.

So if a shape doesn’t have exactly four sides, it’s not a quadrilateral.

TL;DR: A quadrilateral is a 4‑sided shape.

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