A quadrilateral is a polygon with four sides.

The sum of the interior angles of a quadrilateral equals 360º.

### Parallelograms

A parallelogram is a quadrilateral which has parallel sides in pairs. They are classified as follows:

## Square

A square has 4 equal sides and 4 right angles. ## Rectangle

A rectangle has equal opposite sides and 4 right angles. ## Rhombus

A rhombus has four equal sides and equal opposite angles. ## Rhomboid

A rhomboid has opposite sides that are parallel and equal. ### Trapezoid

Trapezoids are quadrilaterals with only two parallel sides. They are classified as follows:

## Right Trapezoid

A right trapezoid has two right angles. ## Isosceles Trapezoid

An isosceles trapezoid has two of its non-parallel sides equal in length. ## Scalene trapezoid

A scalene trapezoid doesn´t have equal sides or angles. Did you like the article?     (1 votes, average: 5.00 out of 5) Loading...

Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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