Acronym tript Name trigonal-prismatic (line-)tegum,trigonal-prismatic dipyramid Circumradius ... Lace cityin 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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