Brain Game: Wasn't She in 'The Birds'?

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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.

April 12, 2012 - 3:30am
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