A polygon is regular if it is uniform and its faces are all alike. The regular convex polyhedra are the five Platonic solids, which have been known since classical Greece. The ancient Greek ...

STEP 1: On each of the nets, colour in the faces that will make ... sheet that can't be folded into a corner. So only three Platonic solids can be made from triangles. Image caption, Three squares ...

Modern dating can be exhausting. Between navigating dating apps, decoding mixed signals, and dealing with situationships that seem to go nowhere, sometimes love feels like more trouble than it’s worth ...