Chat with our AI personalities
A hexahedron is two triangular pyramids with their bases glued together.
A two dimensional figure with 6 sides is a hexagon. 3d=>hexahedron
A hexahedron in the form of a triangular bipyramid: two triangular pyramids stuck together.
One is a cuboid. The other is a shape with two pentagonal shapes that meet along one edge. Along the next edges, one on either side is a triangular face. And on the further two sides of the pentagon are trapezium faces. I am not aware of a name for this shape other than hexahedron, which does not distinguish it from a cuboid.
A ditetrahedron (two triangular pyramids stuck together base-to-base) or, more boringly, a cube.