Classify Polygons

In this activity, we will look at different polygons!

 

A polygon is - A 2D shape bounded by straight sides

 

The smallest 2D shape we can make which is bounded by straight sides is a triangle

 

 

If we add a side, as you know we have a quadrilateral.

 

 

 

5 sides gives us a pentagon.

 

 

 

6 sides is a hexagon.

 

 

 

7 sides is a heptagon.

 

 

 

8 sides is an octagon.         9 sides is a nonagon.              10 sides is a decagon etc .........

 

 

You will notice that there are different types of shape within each category.

 

They are easy to remember as they are: 

 

Regular - These have the same size angles and the same length sides.

Irregular - Different size angles and different length of sides. 

 

Let's use this information to see if you can recognise different polygons!