A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a ...

H ow few corners can a shape have and still tile the plane?” mathematician Gábor Domokos asked me over pizza. His deceptively simple question was about the geometry of tilings, also called ...

2D shapes can be found printed in a book or you can draw them on a piece of paper. 2D shapes have sides and corners (also called vertices). Here are some 2D shapes you might know.

A stop sign always starts with an octagon, but sometimes ends with a traffic citation. The post Math Puzzle for June 27, 2025 ...