Hendecagonal duotegmatic alterprism

The hendecagonal duotegmatic alterprism is a convex isogonal polyteron that consists of 2 hendecagonal duotegums and 242 isosceles triangular-triangular duotegums. 2 hendecagonal duotegums and 33 isosceles triangular-triangular duotegums join at each vertex. It can be formed as an alterprism of a hendecagonal duotegum, or as the hull of two opposite hendecagonal disphenoids.

Using the ratio method, the lowest possible ratio between the longest and shortest edges is 1:$$\sqrt{\frac{2+\cot\frac{\pi}{11}\csc\frac{\pi}{11}}{2}}$$ ≈ 1:2.65409.