Imagine a Toblerone chocolate bar. That long, triangular box? That’s a triangular right prism. So is a wedge of cheese, a slice of cake, or the roof of a house. Basically, it’s a shape with two identical triangle ends and three rectangular sides connecting them.
It’s like a triangle that got stretched out, like taffy, into a whole new dimension. And once you start noticing them, they’re everywhere.
