Acronym batal Name bitruncated heptapeton Circumradius sqrt(19/7) = 1.647509 Lace cityin approx. ASCII-art ```o3o3o3x o3o3o3u o3o3x3x o3o3o3u o3o3u3o o3o3x3x o3o3u3o o3x3x3o ``` Dihedral angles (at margins) at tip between bittix and tix:   arccos(-1/6) = 99.594068° at deca between bittix and bittix:   arccos(1/6) = 80.405932° at pen between tix and tix:   arccos(1/6) = 80.405932° Externallinks

Incidence matrix according to Dynkin symbol

```o3x3x3o3o3o

. . . . . . | 105 |   2   4 |  1   8   6 |  4  12   4 |  6  8  1 | 4 2
------------+-----+---------+------------+------------+----------+----
. x . . . . |   2 | 105   * |  1   4   0 |  4   6   0 |  6  4  0 | 4 1
. . x . . . |   2 |   * 210 |  0   2   3 |  1   6   3 |  3  6  1 | 3 2
------------+-----+---------+------------+------------+----------+----
o3x . . . . |   3 |   3   0 | 35   *   * ♦  4   0   0 |  6  0  0 | 4 0
. x3x . . . |   6 |   3   3 |  * 140   * |  1   3   0 |  3  3  0 | 3 1
. . x3o . . |   3 |   0   3 |  *   * 210 |  0   2   2 |  1  4  1 | 2 2
------------+-----+---------+------------+------------+----------+----
o3x3x . . . ♦  12 |  12   6 |  4   4   0 | 35   *   * |  3  0  0 | 3 0
. x3x3o . . ♦  12 |   6  12 |  0   4   4 |  * 105   * |  1  2  0 | 2 1
. . x3o3o . ♦   4 |   0   6 |  0   0   4 |  *   * 105 |  0  2  1 | 1 2
------------+-----+---------+------------+------------+----------+----
o3x3x3o . . ♦  30 |  30  30 | 10  20  10 |  5   5   0 | 21  *  * | 2 0
. x3x3o3o . ♦  20 |  10  30 |  0  10  20 |  0   5   5 |  * 42  * | 1 1
. . x3o3o3o ♦   5 |   0  10 |  0   0  10 |  0   0   5 |  *  * 21 | 0 2
------------+-----+---------+------------+------------+----------+----
o3x3x3o3o . ♦  60 |  60  90 | 20  60  60 | 15  30  15 |  6  6  0 | 7 *
. x3x3o3o3o ♦  30 |  15  60 |  0  20  60 |  0  15  30 |  0  6  6 | * 7
```

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