Acronym sissidagad, sissid || gad
Name small stellated decahedron atop great dodecahedron,
sissid antiprism,
gad antiprism
Circumradius 1
Face vector 24, 120, 144, 56
Confer
general polytopal classes:
segmentochora  
External
links
polytopewiki  

As abstract polytope sissidagad is automorph, thereby interchanging the roles of pentagons and pentagrams, resp. those of stappy and peppy.


Incidence matrix according to Dynkin symbol

xo5/2oo5ox&#x   → height = 1/2
(sissid || gad)

o.5/2o.5o.    | 12  * |  5  5  0 |  5 10  5  0 | 1  5  5  1 0
.o5/2.o5.o    |  * 12 |  0  5  5 |  0  5 10  5 | 0  1  5  5 1
--------------+-------+----------+-------------+-------------
x.   .. ..    |  2  0 | 30  *  * |  2  2  0  0 | 1  2  1  0 0
oo5/2oo5oo&#x |  1  1 |  * 60  * |  0  2  2  0 | 0  1  2  1 0
..   .. .x    |  0  2 |  *  * 30 |  0  0  2  2 | 0  0  1  2 1
--------------+-------+----------+-------------+-------------
x.5/2o. ..    |  5  0 |  5  0  0 | 12  *  *  * | 1  1  0  0 0
xo   .. ..&#x |  2  1 |  1  2  0 |  * 60  *  * | 0  1  1  0 0
..   .. ox&#x |  1  2 |  0  2  1 |  *  * 60  * | 0  0  1  1 0
..   .o5.x    |  0  5 |  0  0  5 |  *  *  * 12 | 0  0  0  1 1
--------------+-------+----------+-------------+-------------
x.5/2o.5o.     12  0 | 30  0  0 | 12  0  0  0 | 1  *  *  * *
xo5/2oo ..&#x   5  1 |  5  5  0 |  1  5  0  0 | * 12  *  * *
xo   .. ox&#x   2  2 |  1  4  1 |  0  2  2  0 | *  * 30  * *
..   oo5ox&#x   1  5 |  0  5  5 |  0  0  5  1 | *  *  * 12 *
.o5/2.o5.x      0 12 |  0  0 30 |  0  0  0 12 | *  *  *  * 1

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