BBC

KS2 Maths teaching resources: Regular and irregular polygons

KAYLA: And it’s a closed shape.It wouldn’t be much good as a pond otherwise. ADA: These properties tell us it’s a polygon.A polygon is a closed shape made of straight lines.Your pond is a type of ...
BBC

Sort 2D and 3D shapes

Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...
Ars Technica

After 400 years, mathematicians find a new class of shapes

The works of the Greek polymath Plato have kept people busy for millennia. Mathematicians have long pondered Platonic solids, a collection of geometric forms that are highly regular and are frequently ...
The Conversation

After 400 years, mathematicians find a new class of solid shapes

The work of the Greek polymath Plato has kept millions of people busy for millennia. A few among them have been mathematicians who have obsessed about Platonic solids, a class of geometric forms that ...