Acronym  gissi 
Name 
great snub icosahedron, compound of 10 oct (but not si) 
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Circumradius  1/sqrt(2) = 0.707107 
Inradius  1/sqrt(6) = 0.408248 
Vertex figure  [3^{4}] 
Dihedral angles
(at margins) 

Confer  
External links 
It can be obtained by placing 10 oct, thought of as triagular antiprisms, within an ike (in each of the axial orientations) with basefaces oriented dually to those of the ike.
A double cover of gissi occurs as special case of addasi.
60  2 2  3 1  1 ++++ 2  60 *  1 1  1 2  * 60  2 0  1 ++++ 3  1 2  60 *  1 3  3 0  * 20  1 ++++ ♦ 6  6 6  6 2  10
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