We must all know regular polyhedron, but in people's mind, it must be possible to have as many faces as possible, but in fact, regular polyhedron can only have 20 faces at most. All faces of a regular polyhedron are congruent regular polygons, and all polyhedral angles are congruent polyhedral angles. Among them, the tetrahedron with the least number of faces and the icosahedron with the most number of faces.

Regular icosahedron is a regular polyhedron composed of 20 equilateral triangles, with 12 vertices, 30 edges and 20 faces. D20 is a positive icosahedron marked with numbers. Today we collected some D20 tattoos. I hope these tattoos can give you inspiration.

Source: @lucky_cat_tattoo