Acronym ...
Name vertex figure of biprismatointercepted dodecateron
Cross sections
 ©
Circumradius sqrt(2/3) = 0.816497
General of army triddip
Pattern
a   b
 c            g   h
               i
d   e
 f

Incidence matrix

9 |  4  4 | 12 4 | 4 4
--+-------+------+----
2 | 18  * |  2 2 | 3 1  ab,ad x
2 |  * 18 |  4 0 | 2 2  ae q
--+-------+------+----
3 |  1  2 | 36 * | 1 1  abf xqq verf(trip)
4 |  4  0 |  * 9 | 2 0  abed xxxx verf(oct)
--+-------+------+----
6 |  9  6 |  6 3 | 6 *  abcdef verf(pinnip)
4 |  2  4 |  4 0 | * 9  abfi verf(triddip)

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