Four-sided die

Four-sided dice, abbreviated d4,[1] are often used in tabletop role-playing games to obtain random integers in the range 1–4.

A third form of d4s are long dice shaped like rectangular prisms, as used in the Scandinavian game daldøs.

Four-sided dice were among the gambling and divination tools used by early man who carved them from nuts, wood, stone, ivory and bone.

[3] In India and Tibet, three four-sided long dice were rolled sequentially as an oracle, to produce 1 of 64 possible outcomes.

[5] The d20 System includes a four-sided regular tetrahedral die among other dice with 6, 8, 10, 12 and 20 faces.