Decagonal duotruncatoalterprism

The decagonal duotruncatoalterprism is a convex isogonal polychoron and the eighth member of the duotruncatoalterprisms that consists of 20 decagonal prisms, 40 decagonal cupolas, 100 rectangular trapezoprisms and 100 tetragonal disphenoids obtained as the convex hull of two orthogonal decagonal-icosagonal duoprisms. However, it cannot be made scaliform.