Great pentakis dodecahedron

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Great pentakis dodecahedron
DU58 great pentakisdodecahedron.png
Type Star polyhedron
Face DU58 facets.png
Elements F = 60, E = 90
V = 24 (χ = 6)
Symmetry group Ih, [5,3], *532
Index references DU 58
dual polyhedron Small stellated truncated dodecahedron
3D model of a great pentakis dodecahedron Great pentakis dodecahedron.stl
3D model of a great pentakis dodecahedron

In geometry, the great pentakis dodecahedron is a nonconvex isohedral polyhedron.

Contents

It is the dual of the uniform small stellated truncated dodecahedron. The pentagonal faces pass close to the center in the uniform polyhedron, causing this dual to be very spikey. It has 60 intersecting isosceles triangle faces. Part of each triangle lies within the solid, hence is invisible in solid models.

Proportions

The triangles have one very acute angle of and two of . The dihedral angle equals .

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References