PURPOSE: To obtain a beautiful solid body by applying the die to an external form design of woodenwork and a ball, etc., by obtaining that which has a shape of a hundred twenty face body die in which 120 pieces of triangles of the same shape are matched.

CONSTITUTION: By applying a centroid subdividing method to a regular dodecahedron (from the centroid of a regular pentagon of the regular dodecahedron, the centroid is subdivided into 10 pieces of triangles for connecting the middle points of five apexes and five sides, the centroid and the middle point are kept away a little from the center, and each point is connected, by which a polyhedron of 120 faces is formed), a hundred twenty face body die is made. In such a way, when it is applied to an external form design of woodenwork and a ball, etc., a beautiful solid body is obtained.