Acronym	n,n-dip
Name	n-gon - n-gon duoprism
Circumradius	1/(sqrt(2) sin(π/n))
General of army	(is itself convex)
Colonel of regiment	(is itself locally convex)
Face vector	n2, 2n2, n2+2n, 2n
Especially	2n,2n-dip   triddip (n=3)   tes (squadip, n=4)   pedip (n=5)   hiddip (n=6)   hedip (n=7)   odip (n=8)   edip (n=9)   dedip (n=10)   twaddip (n=12)   squat (n=∞)
Confer	general duoprisms: n,m-dip   general polytopal classes: Wythoffian polychora   noble polytopes
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The torical facial subset, built from the lacing squares of the n-prismatic cells, by itself describes the regular finite skew polyhedron x4o4o|n, a modwrap of squat.

Incidence matrix according to Dynkin symbol

xno xno   (n>2)

. . . . | nn |  2  2 | 1  4 1 | 2 2
--------+----+-------+--------+----
x . . . |  2 | nn  * | 1  2 0 | 2 1
. . x . |  2 |  * nn | 0  2 1 | 1 2
--------+----+-------+--------+----
xno . . |  n |  n  0 | n  * * | 2 0
x . x . |  4 |  2  2 | * nn * | 1 1
. . xno |  n |  0  n | *  * n | 0 2
--------+----+-------+--------+----
xno x . ♦ 2n | 2n  n | 2  n 0 | n *
x . xno ♦ 2n |  n 2n | 0  n 2 | * n

or
. . . .    | nn |   4 |  2  4 |  4
-----------+----+-----+-------+---
x . . .  & |  2 | 2nn |  1  2 |  3
-----------+----+-----+-------+---
xno . .  & |  n |   n | 2n  * |  2
x . x .    |  4 |   4 |  * nn |  2
-----------+----+-----+-------+---
xno x .  & ♦ 2n |  3n |  2  n | 2n