Acronym tript
Name trigonal-prismatic (line-)tegum,
trigonal-prismatic dipyramid
Circumradius ...
Lace city
in approx. ASCII-art
   o3o   
         
x3o   x3o
         
   o3o   
         o o
  x o       
            
            
o o    x x  
Dihedral angles
  • at {4} between squippy and squippy:   arccos(-2/3) = 131.810315°
  • at {3} between squippy and tet:   arccos(-1/4) = 104.477512°
  • at {3} between tet and tet:   arccos(-1/4) = 104.477512°
  • at {3} between squippy and squippy:   arccos(1/4) = 75.522488°
Confer
mono-pyramid:
trippy  
general polytopal classes:
bistratic lace towers  

Incidence matrix according to Dynkin symbol

oxo oxo3ooo&#xt   → both heights = sqrt(5/12) = 0.645497
(pt || pseudo trip || pt)

o.. o..3o..     & | 2 *   6 0 0 | 3  6 0 0 | 3 2
.o. .o.3.o.       | * 6 |  2 1 2 | 2  4 2 1 | 4 2
------------------+-----+--------+----------+----
oo. oo.3oo.&#x  & | 1 1 | 12 * * | 1  2 0 0 | 2 1
.x. ... ...       | 0 2 |  * 3 * | 2  0 2 0 | 4 0
... .x. ...       | 0 2 |  * * 6 | 0  2 1 1 | 2 2
------------------+-----+--------+----------+----
ox. ... ...&#x  & | 1 2 |  2 1 0 | 6  * * * | 2 0
... ox. ...&#x  & | 1 2 |  2 0 1 | * 12 * * | 1 1
.x. .x. ...       | 0 4 |  0 2 2 | *  * 3 * | 2 0
... .x.3.o.       | 0 3 |  0 0 3 | *  * * 2 | 0 2
------------------+-----+--------+----------+----
ox. ox. ...&#x  &  1 4 |  4 2 2 | 2  2 1 0 | 6 *
... ox.3oo.&#x  &  1 3 |  3 0 3 | 0  3 0 1 | * 4

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