Josep Rey Nadal

This object, with 12 pentagons and 20 triangles, can be considered a rotegrity. It's interactive and it's build with 30 similar pieces. No tools are needed, only your hands. These pieces are decorated with 5 colours, 6 of each one, and can be arranged however the user likes. One of the possible arrangements is with all the pentagons painted differently. From the 24 cyclical permutations of 5 colours, you can get 12, all of them with the same parity. There are 20 possibilities to arrange 3 colours of 5 to ensemble the triangles and all of them are possible. Thus, all the triangles can be different. This object has chirality. You can build the object or its specular image.