Quadrilaterals

A quadrilateral is a four-sided polygon. The sum of its interior angles is always 360 degrees. Quadrilaterals can be classified based on their side lengths, angles, and symmetry properties. Common types include parallelograms, rectangles, squares, rhombuses, trapeziums, and kites.

Important properties

• A quadrilateral has four sides and four vertices.

• The sum of the interior angles is 360 degrees.

• The sides can be of different lengths and the angles can be of different sizes.

• Special quadrilaterals have additional properties (e.g., parallelograms have opposite sides parallel).