The original version of this story appeared in Quanta Magazine. In 360 BC, Plato envisioned the cosmos as an arrangement of five geometric shapes: flat-sided solids called polyhedra. These immediately ...

👉 Learn how to find the volume and the surface area of a pyramid. A pyramid is a 3-dimensional object having a polygon as its base and triangular surfaces converging at a single point called its apex ...

It was the primitive pyramid that caught my eye. I wondered what this construct — it looked like a child’s version of an Egyptian structure sculpted in some dark, pebbly Play-Doh — was doing in a ...