Regular polyhedron
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A regular polyhedron is a polyhedron with regular and congruent polygons as faces. Its symmetry group acts transitively on its flags. A regular polyhedron is highly symmetrical, being all of edge-tran
The coccolithophore Braarudosphaera bigelowii has a regular dodecahedral structure
The radiolarian Circogonia icosahedra has a regular icosahedral structure
A myovirus typically has a regular icosahedral capsid (head) about 100 nanometers across.
Tetrahedron
Semiregular polyhedron
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In geometry, the term semiregular polyhedron is used variously by different authors.
Rhombicdodecahedron