In the previous tutorial we explored how shapes can be categorised based on the length of their sides and their angle sizes. We can also classify shapes based on the number of sides that they have.
How to classify a polygon by its number of sides
Below are the naming conventions for polygons with up to 10 sides.
The example shapes above are regular shapes. Importantly, irregular shapes are also named in this way (as below).
It's possible to further classify these shapes into sub-categories; these will be covered in the following pages for triangles (3-sided shapes) and quadrangles (4-sided shapes).