This KS1 maths article explains how two dimensional shapes are completely flat with sides and corners.

There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this KS2 Maths guide from BBC Bitesize.

The shapes of two-dimensional (2D) nanostructures on surfaces are determined by their boundary energies1,2,3 as well as by long-range elastic, electrostatic or magnetic interactions. Although it ...

Researchers have developed a technique that programs 2D materials to transform into complex 3D shapes.