Triangular bipyramid

<p>A triangular bipyramid is a <a href="/facts/Hexahedron/UzruYxzd">hexahedron</a> with six triangular faces constructed by attaching two <a href="/facts/Tetrahedron/7mkSrl6j">tetrahedra</a> face-to-face. The same shape is also known as a triangular dipyramid or trigonal bipyramid. If these tetrahedra are regular, all faces of a triangular bipyramid are <a href="/facts/Equilateral_triangle/MJomsYDS">equilateral</a>. It is an example of a <a href="/facts/Deltahedron/qDjkasx9">deltahedron</a>, <a href="/facts/Composite_polyhedron/z1pUdj7r">composite polyhedron</a>, and <a href="/facts/Johnson_solid/8SR7CyNz">Johnson solid</a>.
</p><p>Many polyhedra are related to the triangular bipyramid, such as similar shapes derived from different approaches and the <a href="/facts/Triangular_prism/Yjp4Kw9M">triangular prism</a> as its <a href="/facts/Dual_polyhedron/rkIHbmAf">dual polyhedron</a>. Applications of a triangular bipyramid include <a href="/facts/Trigonal_bipyramidal_molecular_geometry/fTayDtlN">trigonal bipyramidal molecular geometry</a> which describes its <a href="/facts/Atom_cluster/EsuLgxJU">atom cluster</a>, a solution of the <a href="/facts/Thomson_problem/eyDlFwy4">Thomson problem</a>, and the representation of <a href="/facts/Color_model/PRcgeJE4">color order systems</a> by the eighteenth century.
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Triangular bipyramid open-in-new

Triangular bipyramid