<div class="thumb tright"><div class="thumbinner" style="width:222px;"><a href="//commons.wikimedia.org/wiki/File:Brockhaus_chrystal_shapes_(Krystalle._I.).jpg" class="image"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg/220px-Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg" decoding="async" width="220" height="146" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg/330px-Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg/440px-Brockhaus_chrystal_shapes_%28Krystalle._I.%29.jpg 2x" data-file-width="1144" data-file-height="759"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Brockhaus_chrystal_shapes_(Krystalle._I.).jpg" class="internal" title="Enlarge"></a></div>crop from this image</div></div></div>
<table class="wikitable"><tbody><tr><th>original German legend</th><th>English articles</th></tr><tr><td>18. Trigondodekaeder.</td><td><a href="https://en.wikipedia.org/wiki/Triakis_tetrahedron" class="extiw" title="w:Triakis tetrahedron">Triakis tetrahedron</a></td></tr><tr><td>19. Deltoiddodekaeder.</td><td><a href="https://en.wikipedia.org/wiki/Deltoidal_dodecahedron" class="extiw" title="w:Deltoidal dodecahedron">Rhombic (deltoidal) dodecahedron</a> flattened to <a href="https://en.wikipedia.org/wiki/tetrahedral_symmetry" class="extiw" title="w:tetrahedral symmetry">tetrahedral symmetry</a> <small>(<a href="//commons.wikimedia.org/wiki/Category:Rhombic_dodecahedron_(close_to_tetrahedron)" title="Category:Rhombic dodecahedron (close to tetrahedron)">category</a>)</small></td></tr><tr><td>20. Hexakistetraeder.</td><td><a href="https://en.wikipedia.org/wiki/Disdyakis_hexahedron" class="extiw" title="w:Disdyakis hexahedron">Disdyakis hexahedron</a> flattened to tetrahedral symmetry <small>(<a href="//commons.wikimedia.org/wiki/Category:Tetrakis_hexahedron_(close_to_tetrahedron)" title="Category:Tetrakis hexahedron (close to tetrahedron)">category</a>)</small></td></tr></tbody></table>
Unknown author<span style="display: none;">Unknown author</span>
Brockhaus Konversations-Lexikon, 14. Auflage