This unique 4 sided die is easier to roll than the standard tetrahedron and it's easier to read the result. The shape is a gyrobifastigium, an order 2 polyisohedron. It has 4 square sides and 4 equilateral triangle sides, though only the square sides are stable. For more information on unique dice shapes, see http://loki3.com/poly/fair-dice.html.

Dimensions

IN: 1.298 w x 0.8 d x 0.799 h
CM: 3.298 w x 2.032 d x 2.03 h

Comments

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This die is brilliant: it neatly disproves what I had believed, that for a die to be truly geometrically fair it had to be a regular solid or a Catalan solid. This is neither (a Johnson solid), but all of the faces *which it can land on* are identical.
November 23, 2012, 1:08 pm
 
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