Acronym tau ope Name tetra-augmented ope Dihedral angles at {4} between squippy and trip:   arccos[-(1+sqrt(40))/sqrt(54)] = 175.376378° at {3} between oct and tet:   arccos[-sqrt(5/8)] = 142.238756° at {3} between squippy and tet:   arccos(-1/4) = 104.477512° at {3} between oct and trip:   90° at {3} between squippy and squippy:   arccos(1/4) = 75.522488° Confer blend-component: ope   trippy   general polytopal classes: bistratic lace towers

For this polychoron every alternate trip of ope will be augmented accordingly.

Incidence matrix according to Dynkin symbol

```oa3xo3oo xo&#zx   → height = 0, where a = (2+sqrt(10))/3 = 1.720759
(tegum sum of ope and a-tet

o.3o.3o. o.    | 12 * |  4 1  2 | 2 2  4  4  2 | 1 2 2  4
.o3.o3.o .o    |  * 4 ♦  0 0  6 | 0 0  0  6  3 | 0 0 2  3
---------------+------+---------+--------------+----------
.. x. .. ..    |  2 0 | 24 *  * | 1 1  1  1  0 | 1 1 1  1
.. .. .. x.    |  2 0 |  * 6  * | 0 0  4  0  2 | 0 2 0  4
oo3oo3oo oo&#x |  1 1 |  * * 24 | 0 0  0  2  1 | 0 0 1  2
---------------+------+---------+--------------+---------
o.3x. .. ..    |  3 0 |  3 0  0 | 8 *  *  *  * | 1 1 0  0
.. x.3o. ..    |  3 0 |  3 0  0 | * 8  *  *  * | 1 0 1  0
.. x. .. x.    |  4 0 |  2 2  0 | * * 12  *  * | 0 1 0  1
.. xo .. ..&#x |  2 1 |  1 0  2 | * *  * 24  * | 0 0 1  1
.. .. .. xo&#x |  2 1 |  0 1  2 | * *  *  * 12 | 0 0 0  2
---------------+------+---------+--------------+---------
o.3x.3o. ..    ♦  6 0 | 12 0  0 | 4 4  0  0  0 | 2 *  *  *
o.3x. .. x.    ♦  6 0 |  6 3  0 | 2 0  3  0  0 | * 4  *  *
.. xo3oo ..&#x ♦  3 1 |  3 0  3 | 0 1  0  3  0 | * * 8  *
.. xo .. xo&#x ♦  4 1 |  2 2  4 | 0 0  1  2  2 | * * * 12
```

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