Square-heptagonal duoprism

The square-heptagonal duoprism or squahedip, also known as the 4-7 duoprism, is a uniform duoprism that consists of 4 heptagonal prisms and 7 cubes, with two of each joining at each vertex. It is also a convex segmentochoron, being the prism of the heptagonal prism.

Vertex coordinates
The coordinates of a square-heptagonal duoprism, centered at the origin and with edge length 2sin(π/7), are given by: where j = 2, 4, 6.
 * $$\left(±\sin\frac\pi7,±\sin\frac\pi7,1,0\right),$$
 * $$\left(±\sin\frac\pi7,±\sin\frac\pi7,\cos\left(\frac{j\pi}7\right),±\sin\left(\frac{j\pi}7\right)\right),$$

Representations
A square-heptagonal duoprism has the following Coxeter diagrams:
 * x4o x7o (full symmetry)
 * x x x7o (squares as rectangles)