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Quadrilateral is a term used to describe all 4-sided 2D shapes. Examples of quadrilaterals include:

  • squares
  • rectangles
  • trapeziums
  • parallelograms
  • rhombuses
  • kites
  • irregular quadrilaterals

Quadrilaterals can be divided into two groups; parallelograms and other quadrilaterals.


A quadrilateral is a parallelogram if both pairs of opposite sides are equal and parallel to each other.


Rectangles, parallelograms, squares and rhombuses (diamonds) are all parallelograms as their opposite sides are equal in length and parallel.

Other quadrilaterals

Trapeziums and kites are not parallelograms.

A trapezium has 4 sides but only one pair of sides is parallel.

A kite does not have opposite sides that are equal or parallel.


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