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== Related polyhedra ==
The rhombic icosahedron can be derived from the [[rhombic triacontahedron]] by removing a belt of 10 middle faces with parallel edges.
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|[[File:Rhombic_triacontahedron_middle_colored.png|160px]]<BR>A [[rhombic triacontahedron]] can be seen as an elongated rhombic icosahedron.
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The orthogonal projection of the (vertical) belt of 10 middle faces of the rhombic triacontahedron is just the (horizontal) exterior regular decagon of the common orthogonal projection.
Removal of a further belt of 8 faces with parallel edges from the icosahedron results in the [[Bilinski dodecahedron]], which is topologically equivalent but not congruent to the regular [[rhombic dodecahedron]].
== References ==
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