A sofa has to meet a range of criteria to prove a great buy, and one of those is that it is a shape that suits your room.

Triangles, pentagons, hexagons, any shape. And a circle becomes a sphere with just one large, curved face, like a ball. Perfect for, uh, rolling. Strike! I mean…oh come on now. Her shape ...

With his expertise in chemistry and math, scientist Fred Baur invented potato chips in the shape of a hyperbolic paraboloid. Lightweight chips like Pringles can fly off the conveyor belt. This shape, ...