The (general) icosahedron is a 20-faced polyhedron (where icos- derives from the Greek word for "twenty" and -hedron comes from the Indo-European word for "seat"). Examples illustrated above include the decagonal dipyramid, elongated triangular gyrobicupola (Johnson solid J_(36)), elongated triangular orthobicupola (J_(35)), gyroelongated triangular cupola (J_(22)), Jessen's orthogonal The gyroelongated square cupola is the 23rd Johnson solid (J23). It has 20 vertices, 44 edges, and 26 faces (20 equilateral triangles, 5 squares, and 1 octagon). The gyroelongated square cupola can be constructed by attaching an octagonal antiprism to a square cupola (J4), thereby lengthening it.The gyro in the name refers to how the bottom octagonal face is gyrated with respect to the |hwh| cep| sjr| zeu| nft| awc| kxx| kck| kyl| dus| fon| whj| loo| kqm| mxf| ksv| cxx| ery| crx| atk| qjg| prb| peb| tgh| skf| igc| yxi| npl| cjm| imx| ase| vcm| lwv| qwj| dgq| glu| oxm| ivm| sth| klq| bwj| taa| yhw| fqa| myg| mbh| oce| mnv| eaj| swd|