
icosahedral bipyramid

4-dimensional jyamithiyil, icosahedral bipyramid oru icosahedroninteyum oru segmentinteyum nerittulla thukayaanu, {3,5} + {}. oru central icosahedroninte oro mukhavum rund tetrahedrayumaayi bandhippichirikkunnu, ithu 40 tetrahedral koshangalum 80 thrikonaakrithiyilulla mukhangalum 54 arikukalum 14 konukalum srishtikkunnu. oru icosahedral bipyramid rund icosahedral pyramidukalaayi avayude adithattil orumichu vardhippichathaayi kaanaan kazhiyum.
ithu oru dodecahedral prisatthinte erattayaanu, koksettar-dinkin diagram, athinaal bipyramid ingane vivarikkaam. iruvarkkum koksettar notteshan simetri [2,3,5], oordar 240 undu.
ellah saadhaarana koshangalum (tetrahedra) ulla ithu oru andhamaya polytoppaanu.

