Maths: regular and irregular polygons

A polygon is a flat shape with straight sides.

A regular polygon has all its sides the same length.

Check the board for examples. In class we looked at shapes on page 108 of the NHM book. We decided if they were regular or irregular. We named some of them using the names we learned last term and in Year 3.

Here is an online sorting activity to try at home. Click here and scroll down to Polygon Sort. Be careful with the rhombus. The programmers think it is an irregular shape.

At home please do the word problem sheet I gave you. Remember to show your working and not just write the answer. Enjoy doing your homework.