A dipyramid having a hexagonal base. The volume of a hexagonal pyramid having a regular hexagon with side length 
as a base and of half-height 
is therefore
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The volume common to the two cubes in a cube 2-compound is a hexagonal pyramid.
Hexagonal Dipyramid
See also
Dipyramid, Hexagonal PyramidExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Hexagonal Dipyramid." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HexagonalDipyramid.html