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In the section of the Louvre dedicated to Iranian art, this sculpture with prismatic symme...
The picture shows what happens when you put just one ball in a kaleidoscope, which corresp...
The picture shows what happens when you put just one ball in a kaleidoscope, which corresp...
The picture shows what happens when you put three balls in a kaleidoscope corresponding to...
The picture shows what happens when you put just one ball in a kaleidoscope, which corresp...
The picture shows what happens when you put just one ball in a kaleidoscope, which corresp...
Cubes and octahedra are dual polyhedra. The centres of the faces of an octahedron are vert...
Cubes and octahedra are dual polyhedra. The centres of the faces of a cube are vertices of...
Here we see the great icosahedron, one of the four regular stellated polyhedra, in the kal...
One of the five regular polyhedra, the octahedron, reconstructed, in two colours, in the k...
