Once your child truly masters their understanding of quadrilaterals - how they fit together, and more importantly how complex shapes can be reduced to these simple shapes - geometry will become less of an area of study, and more an art to be explored further.

Quadrilaterals are simple polygons composed of four sides, (edges) and four vertices (corners).  There are many different quadrilaterals, each with their own distinctive features.

## How are they grouped?

Simple quadrilaterals are always either convex or concave.  Convex quadrilaterals can be subdivided into convex parallelograms and 'all other quadrilaterals'.

Click on the images below to be taken to a more detailed page on each shape.

1. Click on the HTML link code below.

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