It's not only a cube ... (6 PIPs)

... in fact "Cubus-X" is a chain made from several triangular pyramids or irregular tetrahedrons (see PIP 1) that can be transformed in a lot of other shapes as shown in the other PIPs. => Cubus-X

➽ PIP 1: a chain (or star)
➽ PIP 2: an UFO
➽ PIP 3: an Icosahedron
➽ PIP 4: a Tetrahedron (triangular pyramid)
➽ PIP 5: a "couch"
➽ PIP 6: an optical illusion (cube in a triangle)

➽ Saturday Self-Challenge – Sa. 07.09.2019, topic: "Cube"

The cube is one of the five platonic bodies (tetrahedron, hexahedron, octahedron, dodecahedron, icosahedron), more precisely a polyhedron with six squares as boundary surfaces, twelve edges and eight corners, in each of which three boundary surfaces meet. The cube is a special parallelepiped, a special cuboid and a special straight square prism.

And => HERE is an online dice simulator. It is intended for cases where dice need to be thrown but no real dice are available. Click on "Würfeln". ;-)