Acronym ...
Name f x3o,
variation of triangular prism,
vertex figure of rectified hecatonicosachoron
Circumradius sqrt[(17+3 sqrt(5))/24] = 0.993902
Lace city
in approx. ASCII-art 
o   o
x   x
General of army (is itself convex)
Colonel of regiment (is itself locally convex)
Dihedral angles
  • between x3o and f x:   90°
  • between f x and f x (at f):   60°
Face vector 6, 9, 5
Confer
general prisms:
n-p   n/d-p  
uniform variant:
trip  
variations:
v x3o   q x3o   u x3o   x q3o   x f3o   x h3o   x u3o   v f3o   f v3o  

Incidence matrix according to Dynkin symbol

f x3o

. . . | 6 | 1 2 | 2 1
------+---+-----+----
f . . | 2 | 3 * | 2 0
. x . | 2 | * 6 | 1 1
------+---+-----+----
f x . | 4 | 2 2 | 3 *
. x3o | 3 | 0 3 | * 2


xx3oo&#f   → height = (1+sqrt(5))/2 = 1.618034
({3} || {3})

o.3o.    | 3 * | 2 1 0 | 1 2 0
.o3.o    | * 3 | 0 1 2 | 0 2 1
---------+-----+-------+------
x. ..    | 2 0 | 3 * * | 1 1 0
oo3oo&#f | 1 1 | * 3 * | 0 2 0
.x ..    | 0 2 | * * 3 | 0 1 1
---------+-----+-------+------
x.3o.    | 3 0 | 3 0 0 | 1 * *
xx ..&#f | 2 2 | 1 2 1 | * 3 *
.x3.o    | 0 3 | 0 0 3 | * * 1


ff ox&#x   → height = sqrt(3)/2 = 0.866025
(f-line || (f,x)-{4})

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


fff&#x   → all heights = 1
(f-line || (f-line || f-line))

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

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