Octagonal duotegmatic alterprism

The octagonal duotegmatic alterprism is a convex isogonal polyteron that consists of 2 octagonal duotegums and 128 isosceles triangular-triangular duotegums. 2 octagonal duotegums and 24 triangular-triangular duotegums join at each vertex. It can be formed as an alterprism of a octagonal duotegum, or as the hull of two dually oriented octagonal disphenoids.