Acronym sisp
Name small swirlprism
Cross sections
 ©
Circumradius (1+sqrt(5))/2 = 1.618034
Colonel of regiment sub-regimental to ex
Confer
uniform relative:
ex   gap  
segmentochora:
pappy  
related scaliform:
gisp  
general polytopal classes:
noble polytopes  
External
links
hedrondude

This one can be obtained by chopping off the vertices of an ex in a similar way along cycles, as is done for gap. Accordingly those vertex pyramids (ikepy) would intersect themselves, resulting in pappy instead. Instead of using just 2 cycles (as for gap), here 12 such cycles are used, leaving no tet any more.

The sisp vertex figure is a faceting of ike, having 10 (x,x,x,f)-trapezia.

As abstract polytope sisp is isomorph to gisp, thereby replacing pentagons by pentagrams, resp. replacing pap by starp.


Incidence matrix

120 |  10   2 |  15   5 |  10
----+---------+---------+----
  2 | 600   * |   2   1 |   3
  2 |   * 120 |   5   0 |   5
----+---------+---------+----
  3 |   2   1 | 600   * |   2
  5 |   5   0 |   * 120 |   2  : {5}
----+---------+---------+----
 10 |  15   5 |  10   2 | 120  : pap

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