Blue stands out as one of the rarest colors in nature, with almost no animals bearing true blue pigments. This fascinating rarity stems from a unique blend of evolution, chemistry, and physics. Unlike ...

A quartet of mathematicians from Yorkshire University, the University of Cambridge, the University of Waterloo and the University of Arkansas has discovered a 2D geometric shape that does not ...

Shapes with 4 sides Explore four-sided shapes looking at straight lines, curved lines and 2D shapes. What are 2D shapes? Explore the properties of 2D shapes from one-sided circles to the eight ...

Save guides, add subjects and pick up where you left off with your BBC account. Two-dimensional (2D) shapes are completely flat. They cannot be picked up. 2D shapes can be found printed in a book ...