There are SIX Platonic Solids

Meet the Hyper-Diamond! It's the sixth Platonic Solid and it only works in the fourth dimension.

Your best google bet to find more about the hyper-diamond is "24-cell".
http://mathworld.wolfram.com/24-Cell....

Watch my Royal Institution lecture about 4D shapes:
Four Dimensional Maths: Things to See...

My book: http://makeanddo4d.com/
Maths Gear: http://mathsgear.co.uk/

4D animations made with Stella4D: http://www.software3d.com/Stella.php

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/

Music by Howard Carter
Design by Simon Wright

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