Acronym quitasa Name quasitruncated hepteract Circumradius sqrt[19-12 sqrt(2)]/2 = 0.712292 Inradiuswrt. hop (7-6 sqrt(2))/sqrt(28) = -0.280692 Inradiuswrt. quotox [sqrt(2)-1]/2 = 0.207107 Dihedral angles (at margins) at quittin between quotox and quotox:   90° at hix between hop and quotox:   arccos[1/sqrt(7)] = 67.792346° Confer analogs: quasitruncated hypercube qtCn

As abstract polytope quitasa is isomorphic to tasa, replacing thereby octagrams by octagons, resp. quith by tic, resp. quitit by tat, resp. quittin by tan, resp. quotox by tox.

Note that the tets, pens, hixes, and hops become retrograde here.

Incidence matrix according to Dynkin symbol

```o3o3o3o3o3x4/3x

. . . . . .   . | 896 |    6   1 |   15   6 |   20  15 |   15  20 |   6 15 |   1  6
----------------+-----+----------+----------+----------+----------+--------+-------
. . . . . x   . |   2 | 2688   * |    5   1 |   10   5 |   10  10 |   5 10 |   1  5
. . . . . .   x |   2 |    * 448 ♦    0   6 |    0  15 |    0  20 |   0 15 |   0  6
----------------+-----+----------+----------+----------+----------+--------+-------
. . . . o3x   . |   3 |    3   0 | 4480   * |    4   1 |    6   4 |   4  6 |   1  4
. . . . . x4/3x |   8 |    4   4 |    * 672 ♦    0   5 |    0  10 |   0 10 |   0  5
----------------+-----+----------+----------+----------+----------+--------+-------
. . . o3o3x   . ♦   4 |    6   0 |    4   0 | 4480   * |    3   1 |   3  3 |   1  3
. . . . o3x4/3x ♦  24 |   24  12 |    8   6 |    * 560 ♦    0   4 |   0  6 |   0  4
----------------+-----+----------+----------+----------+----------+--------+-------
. . o3o3o3x   . ♦   5 |   10   0 |   10   0 |    5   0 | 2688   * |   2  1 |   1  2
. . . o3o3x4/3x ♦  64 |   96  32 |   64  24 |   16   8 |    * 280 |   0  3 |   0  3
----------------+-----+----------+----------+----------+----------+--------+-------
. o3o3o3o3x   . ♦   6 |   15   0 |   20   0 |   15   0 |    6   0 | 896  * |   1  1
. . o3o3o3x4/3x ♦ 160 |  320  80 |  320  80 |  160  40 |   32  10 |   * 84 |   0  2
----------------+-----+----------+----------+----------+----------+--------+-------
o3o3o3o3o3x   . ♦   7 |   21   0 |   35   0 |   35   0 |   21   0 |   7  0 | 128  *
. o3o3o3o3x4/3x ♦ 384 |  960 192 | 1280 240 |  960 160 |  384  60 |  64 12 |   * 14
```

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