Acronym ...
Name f x4o,
variation of cube
Circumradius sqrt[(7+sqrt(5))/8] = 1.074481
Lace city
in approx. ASCII-art
x   x
x   x
General of army (is itself convex)
Colonel of regiment (is itself locally convex)
Dihedral angles
  • between x4o and f x:   90°
  • between f x and f x (at f):   90°
Confer
general prisms:
n-p  
uniform variant:
cube  
variations:
q x4o   u x4o   w x4o  

Incidence matrix according to Dynkin symbol

f x4o

. . . | 8 | 1 2 | 2 1
------+---+-----+----
f . . | 2 | 4 * | 2 0
. x . | 2 | * 8 | 1 1
------+---+-----+----
f x . | 4 | 2 2 | 4 *
. x4o | 4 | 0 4 | * 2

f x x

. . . | 8 | 1 1 1 | 1 1 1
------+---+-------+------
f . . | 2 | 4 * * | 1 1 0
. x . | 2 | * 4 * | 1 0 1
. . x | 2 | * * 4 | 0 1 1
------+---+-------+------
f x . | 4 | 2 2 0 | 2 * *
f . x | 4 | 2 0 2 | * 2 *
. x x | 4 | 0 2 2 | * * 2

xx4oo&#f   → height = (1+sqrt(5))/2 = 1.618034
({4} || {4})

o.4o.    | 4 * | 2 1 0 | 1 2 0
.o4.o    | * 4 | 0 1 2 | 0 2 1
---------+-----+-------+------
x. ..    | 2 0 | 4 * * | 1 1 0
oo4oo&#f | 1 1 | * 4 * | 0 2 0
.x ..    | 0 2 | * * 4 | 0 1 1
---------+-----+-------+------
x.4o.    | 4 0 | 4 0 0 | 1 * *
xx ..&#f | 2 2 | 1 2 1 | * 4 *
.x4.o    | 0 4 | 0 0 4 | * * 1

xx xx&#f   → height = (1+sqrt(5))/2 = 1.618034
({4} || {4})

o. o.    | 4 * | 1 1 1 0 0 | 1 1 1 0
.o .o    | * 4 | 0 0 1 1 1 | 0 1 1 1
---------+-----+-----------+--------
x. ..    | 2 0 | 2 * * * * | 1 1 0 0
.. x.    | 2 0 | * 2 * * * | 1 0 1 0
oo oo&#f | 1 1 | * * 4 * * | 0 1 1 0
.x ..    | 0 2 | * * * 2 * | 0 1 0 1
.. .x    | 0 2 | * * * * 2 | 0 0 1 1
---------+-----+-----------+--------
x. x.    | 4 0 | 2 2 0 0 0 | 1 * * *
xx ..&#f | 2 2 | 1 0 2 1 0 | * 2 * *
.. xx&#f | 2 2 | 0 1 2 0 1 | * * 2 *
.x .x    | 0 4 | 0 0 0 2 2 | * * * 1

ff xx&#x   → height = 1
((f,x)-{4} || (f,x)-{4})

o. o.    | 4 * | 1 1 1 0 0 | 1 1 1 0
.o .o    | * 4 | 0 0 1 1 1 | 0 1 1 1
---------+-----+-----------+--------
f. ..    | 2 0 | 2 * * * * | 1 1 0 0
.. x.    | 2 0 | * 2 * * * | 1 0 1 0
oo oo&#x | 1 1 | * * 4 * * | 0 1 1 0
.f ..    | 0 2 | * * * 2 * | 0 1 0 1
.. .x    | 0 2 | * * * * 2 | 0 0 1 1
---------+-----+-----------+--------
f. x.    | 4 0 | 2 2 0 0 0 | 1 * * *
ff ..&#x | 2 2 | 1 0 2 1 0 | * 2 * *
.. xx&#x | 2 2 | 0 1 2 0 1 | * * 2 *
.f .x    | 0 4 | 0 0 0 2 2 | * * * 1

fff oqo&#xt   → both heights = 1/sqrt(2) = 0.707107
(f-line || pseudo (f,q)-{4} || f-line)

o.. o..     | 2 * * | 1 2 0 0 0 | 2 1 0
.o. .o.     | * 4 * | 0 1 1 1 0 | 1 1 1
..o ..o     | * * 2 | 0 0 0 2 1 | 0 1 2
------------+-------+-----------+------
f.. ...     | 2 0 0 | 1 * * * * | 2 0 0
oo. oo.&#x  | 1 1 0 | * 4 * * * | 1 1 0
.f. ...     | 0 2 0 | * * 2 * * | 1 0 1
.oo .oo&#x  | 0 1 1 | * * * 4 * | 0 1 1
..f ...     | 0 0 2 | * * * * 1 | 0 0 2
------------+-------+-----------+------
ff. ...&#x  | 2 2 0 | 1 2 1 0 0 | 2 * *
... oqo&#xt | 1 2 1 | 0 2 0 2 0 | * 2 *
.ff ...&#x  | 0 2 2 | 0 0 1 2 1 | * * 2
or
o.. o..      & | 4 * | 1 2 0 | 2 1
.o. .o.        | * 4 | 0 2 1 | 2 1
---------------+-----+-------+----
f.. ...      & | 2 0 | 2 * * | 2 0
oo. oo.&#x   & | 1 1 | * 8 * | 1 1
.f. ...        | 0 2 | * * 2 | 2 0
---------------+-----+-------+----
ff. ...&#x   & | 2 2 | 1 2 1 | 4 *
... oqo&#xt    | 2 2 | 0 4 0 | * 2

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