Students taking (or who have recently taken) geometry should find today's mentalfloss.com Brain Game Think Thursday challenge easy. Most of the rest of us... not so much. Good luck!

An octahedron is a three-dimensional object
made up of eight triangular faces.

How many triangular faces make up a tetrahedron?

Here is the ANSWER.

THE ANSWER:

FOUR.

Thanks for playing! Tomorrow, it's Free-for-all Friday.